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lazarus/lcl/interfaces/wince/wincewinapi.inc
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{%MainUnit ../lclintf.pp}
(******************************************************************************
All Winapi related stuff goes here.
This file is used by LCLIntf.pas
if a procedure is platform dependent then it should call:
WidgetSet.MyDependentProc
if a procedure insn't platform dependent, it is no part of InterfaseBase has
to be implementerd here
!! Keep this alphabetical !!
*****************************************************************************
* *
* This file is part of the Lazarus Component Library (LCL) *
* *
* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
* for details about the copyright. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* *
*****************************************************************************
******************************************************************************)
{******************************************************************************
These functions redirect to the platform specific interface object.
Note:
the section for not referring WidgetSet is at the end
******************************************************************************}
//##apiwiz##sps## // do not remove
{
------------------------------------------------------------------------------
Method: Arc
Params: DC - handle to device context
Left - x-coordinate of bounding rectangle's upper-left corner
Top - y-coordinate of bounding rectangle's upper-left corner
Right - x-coordinate of bounding rectangle's lower-right corner
Bottom - y-coordinate of bounding rectangle's lower-right corner
Angle1 - first angle
Angle2 - second angle
Returns: Whether the call was successful
Use Arc to draw an elliptically curved line with the current Pen.
The angles angle1 and angle2 are 1/16th of a degree. For example, a full
circle equals 5760 (16*360). Positive values of Angle and AngleLength mean
counter-clockwise while negative values mean clockwise direction.
Zero degrees is at the 3'o clock position.
------------------------------------------------------------------------------}
{
function TWinCEWidgetSet.Arc(DC: HDC; Left, Top, Right, Bottom, angle1,
angle2: Integer): Boolean;
begin
Result:=inherited Arc(DC, Left, Top, Right, Bottom, angle1, angle2);
end;}
{------------------------------------------------------------------------------
Method: AngleChord
Params: DC, x1, y1, x2, y2, angle1, angle2
Returns: Nothing
Use AngleChord to draw a filled Chord-shape on the canvas. The angles angle1
and angle2 are 1/16th of a degree. For example, a full circle equals 5760
16*360). Positive values of Angle and AngleLength mean counter-clockwise while
negative values mean clockwise direction. Zero degrees is at the 3'o clock
position.
------------------------------------------------------------------------------}
{
function TWinCEWidgetSet.AngleChord(DC: HDC; x, y, width, height, angle1,
angle2: Integer): Boolean;
begin
Result:=inherited AngleChord(DC, x, y, width, height, angle1, angle2);
end;}
{------------------------------------------------------------------------------
Method: BitBlt
Params: DestDC - The destination device context
X, Y - The left/top corner of the destination rectangle
Width, Height - The size of the destination rectangle
SrcDC - The source devicecontext
XSrc, YSrc - The left/top corner of the source rectangle
Rop - The raster operation to be performed
Returns: True if succesful
The BitBlt function copies a bitmap from a source context into a destination
context using the specified raster operation.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.BitBlt(DestDC: HDC; X, Y, Width, Height: Integer; SrcDC: HDC; XSrc, YSrc: Integer; Rop: DWORD): Boolean;
begin
Result := Boolean(Windows.BitBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, Rop));
end;
{------------------------------------------------------------------------------
Method: BeginPaint
Params: Handle - Handle to window to begin painting in
PS - PAINTSTRUCT variable that will receive painting information.
Returns: A device context for the specified window if succesful otherwise nil
The BeginPaint function prepares the specified window for painting and fills
a PAINTSTRUCT structure with information about the painting.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.BeginPaint(Handle: HWND; var PS: TPaintStruct): HDC;
begin
Result := Windows.BeginPaint(Handle, @PS);
end;
{------------------------------------------------------------------------------
Method: CallDefaultWndHandler
Params: Sender - object, that sent the message
Message - a TLMessage
Returns: -
Called by TWinControl.DefaultHandler to let the interface call some default
functions for the message.
------------------------------------------------------------------------------}
procedure TWinCEWidgetSet.CallDefaultWndHandler(Sender: TObject; var Message);
var
Handle: HWND;
procedure CallWinCEPaintHandler;
var
ClientBoundRect: TRect;
PaintMsg: TLMPaint absolute Message;
begin
// the LCL creates paint messages, with a DC origin set to the client
// origin of the emitting control. The paint handler of win32 expects the
// DC origin at the origin of the control.
// -> move the windoworigin
ClientBoundRect:= Classes.Rect(0,0,0,0);
if Sender is TWinControl then
if not GetClientBounds(Handle,ClientBoundRect) then exit;
MoveWindowOrgEx(PaintMsg.DC,-ClientBoundRect.Left,-ClientBoundRect.Top);
try
// call wince paint handler
CallDefaultWindowProc(Handle, WM_PAINT, PaintMsg.DC, 0);
finally
// restore DC origin
MoveWindowOrgEx(PaintMsg.DC, ClientBoundRect.Left, ClientBoundRect.Top);
end;
end;
procedure DrawCheckListBoxItem(CheckListBox: TCheckListBox; Data: PDrawItemStruct);
const
ThemeStateMap: array[TCheckBoxState, Boolean] of TThemedButton =
(
{cbUnchecked} (tbCheckBoxUncheckedDisabled, tbCheckBoxUncheckedNormal),
{cbChecked } (tbCheckBoxCheckedDisabled, tbCheckBoxCheckedNormal),
{cbGrayed } (tbCheckBoxMixedDisabled, tbCheckBoxMixedNormal)
);
var
Enabled, Selected: Boolean;
lgBrush: LOGBRUSH;
Brush: HBRUSH;
Rect: Windows.Rect;
Details: TThemedElementDetails;
OldColor: COLORREF;
OldBackColor: COLORREF;
WideBuffer: widestring;
begin
Selected := (Data^.itemState AND ODS_SELECTED)>0;
Enabled := CheckListBox.Enabled;
{ fill the background
Note: GetSysColorBrush is more efficient then getting the
color and creating a brush because it uses a buffered brush
}
if Enabled and Selected then
Brush := Windows.GetSysColorBrush(COLOR_HIGHLIGHT or SYS_COLOR_INDEX_FLAG)
else
Brush := Windows.GetSysColorBrush(COLOR_WINDOW or SYS_COLOR_INDEX_FLAG);
Rect := Data^.rcItem;
Windows.FillRect(Data^._HDC, Rect, Brush);
InflateRect(Rect, -1, -1);
Rect.Right := Rect.Left + Rect.Bottom - Rect.Top;
// draw all through ThemeServices. ThemeServices can decide itself hot to perform actual draw
Details := ThemeServices.GetElementDetails(ThemeStateMap[CheckListBox.State[Data^.ItemID], Enabled]);
ThemeServices.DrawElement(Data^._HDC, Details, Rect);
// draw text
Rect := Windows.Rect(Data^.rcItem);
Rect.Left := Rect.Left + Rect.Bottom - Rect.Top + 5;
{ Don't suppose anything about the current background color
or text color. Always set them.
LCLIntf.GetSysColor must be called instead of Windows.GetSysColor
because the LCLIntf version makes sure that SYS_COLOR_INDEX_FLAG
is added to the constant.
}
if Selected then
begin
OldColor := Windows.SetTextColor(Data^._HDC, LCLIntf.GetSysColor(COLOR_HIGHLIGHTTEXT));
OldBackColor := Windows.SetBkColor(Data^._HDC, LCLIntf.GetSysColor(COLOR_HIGHLIGHT)); // $00D39137
end
else if not Enabled then
begin
OldColor := Windows.SetTextColor(Data^._HDC, LCLIntf.GetSysColor(COLOR_GRAYTEXT)); // $00BFBFBF
OldBackColor := Windows.SetBkColor(Data^._HDC, LCLIntf.GetSysColor(COLOR_WINDOW)); // $00FFFFFF
end
else
begin
OldColor := Windows.SetTextColor(Data^._HDC, LCLIntf.GetSysColor(COLOR_WINDOWTEXT));
OldBackColor := Windows.SetBkColor(Data^._HDC, LCLIntf.GetSysColor(COLOR_WINDOW)); // $00FFFFFF
end;
WideBuffer := UTF8Decode(CheckListBox.Items[Data^.ItemID]);
Windows.DrawTextW(Data^._HDC, PWideChar(WideBuffer), -1,
Rect, DT_SINGLELINE or DT_VCENTER or DT_NOPREFIX);
// Return to default text and background colors
Windows.SetTextColor(Data^._HDC, OldColor);
Windows.SetBkColor(Data^._HDC, OldBackColor);
end;
begin
Handle := ObjectToHwnd(Sender);
case TLMessage(Message).Msg of
LM_PAINT:
CallWinCEPaintHandler;
LM_DRAWITEM:
begin
with TLMDrawItems(Message) do
begin
if Sender is TCheckListBox then
begin
// ItemID not UINT(-1)
if DrawItemStruct^.ItemID <> DWORD($FFFFFFFF) then
DrawCheckListBoxItem(TCheckListBox(Sender), DrawItemStruct);
end;
end;
end;
LM_MEASUREITEM:
begin
with TLMMeasureItem(Message).MeasureItemStruct^ do
begin
if Sender is TCustomListBox then
begin
itemHeight := TCustomListBox(Sender).ItemHeight;
if TCustomListBox(Sender).Style = lbOwnerDrawVariable then
TCustomListBox(Sender).MeasureItem(Integer(itemID), integer(itemHeight));
end;
end;
end;
LM_GETDLGCODE:
begin
TLMessage(Message).Result := CallDefaultWindowProc(Handle, WM_GETDLGCODE, 0, 0);
end;
else
if TLMessage(Message).Msg >= WM_USER then
with TLMessage(Message) do
Result := CallDefaultWindowProc(Handle, Msg, WParam, LParam);
end;
end;
{------------------------------------------------------------------------------
Method: CallNextHookEx
Params: HHk - handle of the current hook
NCode - Hook code
WParam - Word parameter
LParam - Long-integer parameter
Returns: The handle of the next hook procedure
Calls the next procedure in the hook chain
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.CallNextHookEx(hHk: HHOOK; ncode: Integer;
wParam: WParam; lParam: LParam): Integer;
begin
Result:=inherited CallNextHookEx(hHk, ncode, wParam, lParam);
end;}
{------------------------------------------------------------------------------
Method: CallWindowProc
Params: LPPrevWndFunc - Address of specified window procedure
Handle - Handle of window receiving messages
Msg - The message sent
WParam - Word parameter
LParam - Long-integer parameter
Returns: Message result
Passes message information to the specified window procedure
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CallWindowProc(LPPrevWndFunc: TFarProc; Handle: HWND;
Msg: UINT; WParam: WParam; LParam: LParam): Integer;
begin
Result := Windows.CallWindowProc(WNDPROC(LPPrevWndFunc), Handle, Msg, Windows.WPARAM(WParam), Windows.LPARAM(LParam));
end;
{------------------------------------------------------------------------------
Method: ClientToScreen
Params: Handle - Handle of window
P - container that contains coordinates
Returns: Whether the call was successful
Converts client coordinates to screen coordinates
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ClientToScreen(Handle: HWND; var P: TPoint): Boolean;
var
ORect: TRect;
begin
Result := Boolean(Windows.ClientToScreen(Handle, @P));
if not Result then exit;
Result := GetLCLClientBoundsOffset(Handle, ORect);
if not Result then exit;
inc(P.X, ORect.Left);
inc(P.Y, ORect.Top);
end;
{------------------------------------------------------------------------------
Method: ClipboardFormatToMimeType
Params: FormatID - a registered format identifier (0 is invalid)
Returns: the corresponding mime type as string
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.ClipboardFormatToMimeType(FormatID: TClipboardFormat
): string;
begin
Result:=inherited ClipboardFormatToMimeType(FormatID);
end; }
{------------------------------------------------------------------------------
Method: ClipboardGetData
Params: ClipboardType - clipboard type
FormatID - a registered format identifier (0 is invalid)
Stream - if format is available, it will be appended to this
stream
Returns: true on success
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.ClipboardGetData(ClipboardType: TClipboardType;
FormatID: TClipboardFormat; Stream: TStream): boolean;
begin
Result:=inherited ClipboardGetData(ClipboardType, FormatID, Stream);
end; }
{------------------------------------------------------------------------------
Method: ClipboardGetFormats
Params: ClipboardType - the type of clipboard operation (GTK only; ignored here)
Count - the number of clipboard formats
List - Pointer to an array of supported formats
(you must free it yourself)
Returns: true on success
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.ClipboardGetFormats(ClipboardType: TClipboardType;
var Count: integer; var List: PClipboardFormat): boolean;
begin
Result:=inherited ClipboardGetFormats(ClipboardType, Count, List);
end; }
{------------------------------------------------------------------------------
Method: ClipboardGetOwnerShip
Params: ClipboardType - Type of clipboard, the win32 interface only handles
ctClipBoard
OnRequestProc - TClipboardRequestEvent is defined in LCLType.pp
if OnRequestProc is nil the onwership will end.
FormatCount - number of formats
Formats - array of TClipboardFormat. The supported formats the owner
provides.
Returns: true on success
Sets the supported formats and requests ownership for the clipboard.
The OnRequestProc is used to get the data from the LCL and to put it on the
clipboard.
if someone else requests the ownership, the OnRequestProc will be executed
with the invalid FormatID 0 to notify the old owner of the lost of ownership.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.ClipboardGetOwnerShip(ClipboardType: TClipboardType;
OnRequestProc: TClipboardRequestEvent; FormatCount: integer;
Formats: PClipboardFormat): boolean;
begin
Result:=inherited ClipboardGetOwnerShip(ClipboardType, OnRequestProc,
FormatCount, Formats);
end; }
{------------------------------------------------------------------------------
Method: ClipboardRegisterFormat
Params: AMimeType - a string (usually a MIME type) identifying a new format
type to register
Returns: the registered Format identifier (TClipboardFormat)
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.ClipboardRegisterFormat(const AMimeType: string
): TClipboardFormat;
begin
Result:=inherited ClipboardRegisterFormat(AMimeType);
end;}
{------------------------------------------------------------------------------
Function: CombineRgn
Params: Dest, Src1, Src2, fnCombineMode
Returns: longint
Combine the 2 Source Regions into the Destination Region using the specified
Combine Mode. The Destination must already be initialized. The Return value
is the Destination's Region type, or ERROR.
The Combine Mode can be one of the following:
RGN_AND : Gets a region of all points which are in both source regions
RGN_COPY : Gets an exact copy of the first source region
RGN_DIFF : Gets a region of all points which are in the first source
region but not in the second.(Source1 - Source2)
RGN_OR : Gets a region of all points which are in either the first
source region or in the second.(Source1 + Source2)
RGN_XOR : Gets all points which are in either the first Source Region
or in the second, but not in both.
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CombineRgn(Dest, Src1, Src2 : HRGN; fnCombineMode : Longint) : Longint;
begin
Result := Windows.CombineRgn(Dest, Src1, Src2, fnCombineMode);
end;
function TWinCEWidgetSet.ComboBoxDropDown(Handle: HWND;
DropDown: boolean): boolean;
begin
Result:=boolean(Windows.SendMessage(Handle, CB_SHOWDROPDOWN, WPARAM(DropDown), 0));
end;
{------------------------------------------------------------------------------
Method: CreateBitmap
Params: Width - bitmap width, in pixels
Height - bitmap height, in pixels
Planes - number of color planes
BitCount - number of bits required to identify a color
BitmapBits - pointer to array containing color data
Returns: A handle to a bitmap
The CreateBitmap function creates a bitmap with the specified width, height,
and color format (color planes and bits per pixel).
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateBitmap(Width, Height: Integer; Planes, BitCount: LongInt; BitmapBits: Pointer): HBITMAP;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.CreateBitmap] Width: %d, Height: %d, Planes: %d, BitCount: %d, BitmapBits: 0x%x', [Width, Height, Planes, BitCount, Longint(BitmapBits)]));
Result := Windows.CreateBitmap(Width, Height, Planes, BitCount, BitmapBits);
Assert(False, Format('Trace:< [TWinCEWidgetSet.CreateBitmap] --> 0x%x', [Integer(Result)]));
end;
function TWinCEWidgetSet.CreateBrushIndirect(const LogBrush: TLogBrush): HBRUSH;
var
LB: Windows.LogBrush;
begin
LB.lbStyle := LogBrush.lbStyle;
LB.lbColor := Windows.COLORREF(ColorToRGB(LogBrush.lbColor));
LB.lbHatch := LogBrush.lbHatch;
Assert(False, Format('Trace:> [TWinCEWidgetSet.CreateBrushIndirect] Style: %d, Color: %8x', [lb.lbStyle, lb.lbColor]));
if lb.lbStyle= BS_NULL then
Result := Windows.GetStockObject(NULL_BRUSH)
else if lb.lbStyle = BS_DIBPATTERNPT then
Result := CreateDIBPatternBrushPt(pointer(lb.lbHatch), lb.lbColor)
else { lb.lbStyle = BS_SOLID }
Result := Windows.CreateSolidBrush(LB.lbColor);
Assert(False, Format('Trace:< [TWinCEWidgetSet.CreateBrushIndirect] Got --> %x', [Result]));
end;
{------------------------------------------------------------------------------
Method: CreateCaret
Params: Handle - handle to owner window
Bitmap - handle to bitmap for caret shape
Width - caret width
Height - caret height
Returns: Whether the function succeeded
Creates a new shape for the system caret and assigns ownership of the caret
to the specified window
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateCaret(Handle: HWND; Bitmap: HBITMAP; Width, Height: Integer): Boolean;
begin
{$ifdef DEBUG_CARET}
DebugLn('[CreateCaret] for window ', IntToHex(Handle, 8));
{$endif}
Result := Boolean(Windows.CreateCaret(Handle, Bitmap, Width, Height));
Assert(False, 'Trace:TODO: [TWinCEWidgetSet.CreateCaret] Finish');
end;
{------------------------------------------------------------------------------
Method: CreateCompatibleBitmap
Params: DC - handle to device context
Width - width of bitmap, in pixels
Height - height of bitmap, in pixels
Returns: a handle to the bitmap
Creates a bitmap compatible with the specified device context.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateCompatibleBitmap(DC: HDC; Width, Height: Integer): HBITMAP;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.CreateCompatibleBitmap] DC: 0x%x, W: %d, H: %d', [DC, Width, Height]));
Result := Windows.CreateCompatibleBitmap(DC, Width, Height);
Assert(False, Format('Trace:< [TWinCEWidgetSet.CreateCompatibleBitmap] DC: 0x%x --> 0x%x', [DC, Result]));
end;
{------------------------------------------------------------------------------
Method: CreateCompatibleDC
Params: DC - handle to memory device context
Returns: handle to a memory device context
Creates a memory device context (DC) compatible with the specified device.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateCompatibleDC(DC: HDC): HDC;
begin
Result := Windows.CreateCompatibleDC(DC);
Assert(False, Format('Trace:[TWinCEWidgetSet.CreateCompatibleDC] DC: 0x%x --> 0x%x', [Integer(DC), Integer(Result)]));
end;
{------------------------------------------------------------------------------
Method: CreateFontIndirect
Params: LogFont - logical font record
Returns: a handle to a logical font
Creates a logical font that has the characteristics specified in the
specified record.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateFontIndirect(const LogFont: TLogFont): HFONT;
var
TempLogFont: TLogFont;
begin
TempLogFont := LogFont;
if String(TempLogFont.lfFaceName) = DefFontData.Name then
begin
Move(FMetrics.lfMessageFont.lfFaceName, TempLogFont.lfFaceName, LF_FACESIZE);
if TempLogFont.lfHeight = 0 then
TempLogFont.lfHeight := FMetrics.lfMessageFont.lfHeight;
end;
Result := Windows.CreateFontIndirect(@TempLogFont);
end;
{------------------------------------------------------------------------------
Method: CreateIconIndirect
Params: IconInfo - pointer to Icon Information record
Returns: handle to a created icon / cursor
Creates an icon / cursor by color and mask bitmaps and other indo.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateIconIndirect(IconInfo: PIconInfo): HICON;
begin
Result := Windows.CreateIconIndirect(IconInfo);
end;
{function TWinCEWidgetSet.CreateFontIndirectEx(const LogFont: TLogFont;
const LongFontName: string): HFONT;
begin
Result:=inherited CreateFontIndirectEx(LogFont, LongFontName);
end;
function TWinCEWidgetSet.CreatePalette(const LogPalette: TLogPalette
): HPALETTE;
begin
Result:=inherited CreatePalette(LogPalette);
end;}
{------------------------------------------------------------------------------
Method: CreatePenIndirect
Params: LogPen - record that defines the style, width, and color of a pen
Returns: a handle that identifies a logical cosmetic pen
Creates a logical cosmetic pen that has the style, width, and color specified
in a record.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreatePenIndirect(const LogPen: TLogPen): HPEN;
var
LP: TLogPen;
begin
LP := LogPen;
Lp.lopnColor := Windows.COLORREF(ColorToRGB(Lp.lopnColor));
Assert(False, 'Trace:[TWinCEWidgetSet.CreatePenIndirect]');
Result := Windows.CreatePenIndirect(Windows.LOGPEN(LP));
end;
{------------------------------------------------------------------------------
Method: CreatePolygonRgn
Params: Points, NumPts, FillMode
Returns: the handle to the region
Creates a Polygon, a closed many-sided shaped region. The Points parameter is
an array of points that give the vertices of the polygon. FillMode=Winding
determines what points are going to be included in the region. When Winding
is True, points are selected by using the Winding fill algorithm. When Winding
is False, points are selected by using using the even-odd (alternative) fill
algorithm. NumPts indicates the number of points to use.
The first point is always connected to the last point.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.CreatePolygonRgn(Points: PPoint; NumPts: Integer;
FillMode: integer): HRGN;
begin
Result:=inherited CreatePolygonRgn(Points, NumPts, FillMode);
end;}
{------------------------------------------------------------------------------
Method: CreateRectRgn
Params: X1 - x-coordinate of region's upper-left corner
Y1 - y-coordinate of region's upper-left corner
X2 - x-coordinate of region's lower-right corner
Y2 - y-coordinate of region's lower-right corner
Returns: the handle to the region
Creates a rectangular region.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.CreateRectRgn(X1, Y1, X2, Y2: Integer): HRGN;
begin
Result := Windows.CreateRectRgn(X1, Y1, X2, Y2);
end;
{------------------------------------------------------------------------------
Method: DeleteDC
Params: HDC - handle to device context
Returns: if the function succeeds.
Deletes the specified device context (DC).
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DeleteDC(HDC: HDC): Boolean;
begin
Result := Boolean(Windows.DeleteDC(HDC));
end;
{------------------------------------------------------------------------------
Method: DeleteObject
Params: GDIObject - handle to graphic object
Returns: if the function succeeds.
Deletes a graphic object, freeing all system resources associated with the
object.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DeleteObject(GDIObject: HGDIOBJ): Boolean;
begin
{ Find out if we want to release internal GDI object }
Result := Boolean(Windows.DeleteObject(GDIObject));
end;
{------------------------------------------------------------------------------
Method: DestroyCaret
Params: Handle - handle to the window with a caret (on Windows, there is
only one, global caret, so this parameter is ignored)
Returns: if the function succeeds
Destroys the caret but doesn't free the bitmap.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DestroyCaret(Handle: HWND): Boolean;
begin
Result := Boolean(Windows.DestroyCaret);
end;
{------------------------------------------------------------------------------
Method: DestroyCursor
Params: Handle - handle to the cursor object
Returns: if the function succeeds
Destroys the cursor
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DestroyCursor(Handle: hCursor): Boolean;
begin
Result := False;
//Result := Boolean(Windows.DestroyCursor(Handle));
end;
function TWinCEWidgetSet.DestroyIcon(Handle: HICON): Boolean;
begin
Result := Windows.DestroyIcon(Handle);
end;
{------------------------------------------------------------------------------
Method: DrawFrameControl
Params: DC - handle to device context
Rect - bounding rectangle
UType - frame-control type
UState - frame-control state
Returns: if the function succeeds
Draws a frame control of the specified type and style.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DrawFrameControl(DC: HDC; const Rect: TRect; uType,uState: Cardinal): Boolean;
var
Flags: dword;
begin
// flat button border cannot be drawn by DrawFrameControl, draw ourselves
if (UType = DFC_BUTTON) and ((UState and DFCS_FLAT) <> 0) then
begin
if (UState and DFCS_PUSHED) <> 0 then
Flags := BDR_SUNKENOUTER
else
if (UState and DFCS_FLAT) <> 0 then Flags := 0
else Flags := BDR_RAISEDINNER;
Result := Boolean(Windows.DrawEdge(DC, @Rect, Flags, BF_RECT));
end else begin
Result := Boolean(Windows.DrawFrameControl(DC, @Rect, UType, UState));
end;
end;
{------------------------------------------------------------------------------
Method: DrawEdge
Params: DC - handle to device context
Rect - rectangle coordinates
Edge - type of inner and outer edge to draw
GrfFlags - type of border
Returns: if the function succeeds.
Draws one or more edges of a rectangle, not including the
right and bottom edge.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DrawEdge(DC: HDC; var ARect: TRect; Edge: Cardinal; GrfFlags: Cardinal): Boolean;
begin
Assert(False, Format('trace:> [TWinCEWidgetSet.DrawEdge] DC:0x%x, Rect = %d,%d,%d,%d', [DC, ARect.Left, ARect.Top, ARect.Right, ARect.Bottom]));
Result := Boolean(Windows.DrawEdge(DC, @ARect, edge, grfFlags));
Assert(False, Format('trace:< [TWinCEWidgetSet.DrawEdge] DC:0x%x, Rect = %d,%d,%d,%d', [DC, ARect.Left, ARect.Top, ARect.Right, ARect.Bottom]));
end;
{------------------------------------------------------------------------------
Method: DrawText
Params: DC, Str, Count, Rect, Flags
Returns: if the string was drawn, or CalcRect run
------------------------------------------------------------------------------}
function TWinCEWidgetSet.DrawText(DC: HDC; Str: PChar; Count: Integer; var Rect: TRect; Flags: Cardinal): Integer;
var
s: AnsiString;
w: WideString;
begin
Assert(False, Format('trace:> [TWinCEWidgetSet.DrawText] DC:0x%x, Str:''%s'', Count: %d, Rect = %d,%d,%d,%d, Flags:%d',
[DC, Str, Count, Rect.Left, Rect.Top, Rect.Right, Rect.Bottom, Flags]));
// use temp buffer, if count is set, there might be no null terminator
if count = -1 then
s := str
else
begin
SetLength(s, count);
move(str^, s[1], count);
end;
// the length of utf8 vs Wide/Ansi the strings differ, so recalc.
// TODO: use the real number of chars (and not the lenght)
W := Utf8Decode(S);
Result := Windows.DrawTextW(DC, PWideChar(W), Length(W), @Rect, Flags);
// Result := Windows.DrawTextW(DC, WideStr, Count, @Rect, Flags);
Assert(False, Format('trace:> [TWinCEWidgetSet.DrawText] DC:0x%x, Str:''%s'', Count: %d, Rect = %d,%d,%d,%d, Flags:%d',
[DC, Str, Count, Rect.Left, Rect.Top, Rect.Right, Rect.Bottom, Flags]));
end;
{------------------------------------------------------------------------------
Method: Ellipse
Params:
DC - handle to device context
X1 - x-coord. of bounding rectangle's upper-left corner
Y1 - y-coord. of bounding rectangle's upper-left corner
X2 - x-coord. of bounding rectangle's lower-right corner
Y2 - y-coord. of bounding rectangle's lower-right corner
Returns: if the function succeeds
Use Ellipse to draw a filled circle or ellipse.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.Ellipse(DC: HDC; x1, y1, x2, y2: Integer): Boolean;
begin
Result := Boolean(Windows.Ellipse(DC, X1, Y1, X2, Y2));
end;
{------------------------------------------------------------------------------
Method: EnableScrollBar
Params: Wnd - handle to window or scroll bar
WSBFlags - scroll bar type flag
WArrows - scroll bar arrow flag
Returns: Nothing
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.EnableScrollBar(Wnd: HWND; wSBflags, wArrows: Cardinal
): Boolean;
begin
Result:=inherited EnableScrollBar(Wnd, wSBflags, wArrows);
end;
}
{------------------------------------------------------------------------------
Method: EnableWindow
Params: HWnd - handle to window
BEnable - whether to enable the window
Returns: if the window was previously disabled
Enables or disables mouse and keyboard input to the specified window or
control.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.EnableWindow(hWnd: HWND; bEnable: Boolean): Boolean;
begin
Assert(False, Format('Trace:[TWinCEWidgetSet.EnableWindow] HWnd: 0x%x, BEnable: %s', [HWnd, BoolToStr(BEnable)]));
Result := Boolean(Windows.EnableWindow(HWnd, BEnable));
end;
{------------------------------------------------------------------------------
Method: EndPaint
Params: Handle - Handle to window
PS - PAINTSTRUCT variable with painting information
Returns: always nonzero.
The EndPaint function marks the end of painting in the specified window.
This function is required for each call to the BeginPaint function, but only
after painting is complete.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.EndPaint(Handle : hwnd; var PS : TPaintStruct): Integer;
begin
Result := Integer(Windows.EndPaint(Handle, @PS));
end;
{function TWinCEWidgetSet.EnumFontFamilies(DC: HDC; Family: Pchar;
EnumFontFamProc: FontEnumProc; LParam: Lparam): longint;
begin
Result:=inherited EnumFontFamilies(DC, Family, EnumFontFamProc, LParam);
end;
function TWinCEWidgetSet.EnumFontFamiliesEx(DC: HDC; lpLogFont: PLogFont;
Callback: FontEnumExProc; Lparam: LParam; Flags: dword): longint;
begin
Result:=inherited EnumFontFamiliesEx(DC, lpLogFont, Callback, Lparam, Flags);
end;}
{------------------------------------------------------------------------------
Function: ExcludeClipRect
Params: dc, Left, Top, Right, Bottom
Returns: integer
Subtracts all intersecting points of the passed bounding rectangle
(Left, Top, Right, Bottom) from the Current clipping region in the
device context (dc).
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ExcludeClipRect(dc: hdc; Left, Top, Right, Bottom: Integer): Integer;
begin
Result := Windows.ExcludeClipRect(dc, Left, Top, Right, Bottom);
end;
{------------------------------------------------------------------------------
Method: ExtTextOut
Params: DC - handle to device context
X - x-coordinate of reference point
Y - x-coordinate of reference point
Options - text-output options
Rect - optional clipping and/or opaquing rectangle
Str - character string to be drawn
Count - number of characters in string
Dx - pointer to array of intercharacter spacing values
Returns: if the string was drawn.
Draws a character string by using the currently selected font.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ExtTextOut(DC: HDC; X, Y: Integer; Options: Longint; Rect: PRect; Str: PChar; Count: Longint; Dx: PInteger): Boolean;
var
s: AnsiString;
w: WideString;
begin
Assert(False, Format('trace:> [TWinCEWidgetSet.ExtTextOut] DC:0x%x, X:%d, Y:%d, Options:%d, Str:''%s'', Count: %d', [DC, X, Y, Options, Str, Count]));
// use temp buffer, if count is set, there might be no null terminator
if count = -1 then
s := str
else
begin
SetLength(s, count);
move(str^, s[1], count);
end;
// the length of utf8 vs Wide/Ansi the strings differ, so recalc.
// TODO: use the real number of chars (and not the lenght)
W := Utf8Decode(S);
Result := Windows.ExtTextOutW(DC, X, Y, Options, LPRECT(Rect), PWideChar(W), Length(W), Dx);
// Result := Boolean(Windows.ExtTextOutW(DC, X, Y, Options, LPRECT(Rect), pWideStr, Count, Dx));
Assert(False, Format('trace:< [TWinCEWidgetSet.ExtTextOut] DC:0x%x, X:%d, Y:%d, Options:%d, Str:''%s'', Count: %d', [DC, X, Y, Options, Str, Count]));
end;
{------------------------------------------------------------------------------
Function: ExtSelectClipRGN
Params: dc, RGN, Mode
Returns: integer
Combines the passed Region with the current clipping region in the device
context (dc), using the specified mode.
The Combine Mode can be one of the following:
RGN_AND : all points which are in both regions
RGN_COPY : an exact copy of the source region, same as SelectClipRGN
RGN_DIFF : all points which are in the Clipping Region but
but not in the Source.(Clip - RGN)
RGN_OR : all points which are in either the Clip Region or
in the Source.(Clip + RGN)
RGN_XOR : all points which are in either the Clip Region
or in the Source, but not in both.
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ExtSelectClipRGN(dc: hdc; rgn: hrgn; Mode: Longint
): Integer;
begin
Result:=inherited ExtSelectClipRGN(dc, rgn, Mode);
end;
{------------------------------------------------------------------------------
Method: FillRect
Params: DC - handle to device context
Rect - record with rectangle
Brush - handle to brush
Returns: if the function succeeds
The FillRect function fills a rectangle by using the specified brush.
This function includes the left and top borders, but excludes the right and
bottom borders of the rectangle.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.FillRect(DC: HDC; const Rect: TRect; Brush: HBRUSH): Boolean;
var
R: TRect;
begin
R := Rect;
Assert(False, Format('trace:> [TWinCEWidgetSet.FillRect] DC: 0x%x; Rect: ((%d,%d)(%d,%d)); Brush: %x', [Integer(DC), R.left, R.top, R.right, R.bottom, brush]));
Result := Boolean(Windows.FillRect(DC, Windows.RECT(r), Brush));
Assert(False, Format('trace:< [TWinCEWidgetSet.FillRect] DC: 0x%x; Rect: ((%d,%d)(%d,%d)); Brush: %x', [Integer(DC), R.left, R.top, R.right, R.bottom, brush]));
end;
{------------------------------------------------------------------------------
Method: Frame3D
Params: DC - handle to device context
Rect - bounding rectangle
FrameWidth - width of the frame (ignored on wince(?))
Style - frame style
Returns: Whether the function was successful
Draws a 3D border in GTK native style.
NOTE: This function is mapped to DrawEdge on Windows.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.Frame3D(DC: HDC; var ARect: TRect;
const FrameWidth: Integer; const Style: TBevelCut): Boolean;
const
Edge: Array[TBevelCut] Of Integer = (0, BDR_SUNKENOUTER, BDR_RAISEDINNER, 0);
begin
Result := Boolean(DrawEdge(DC, ARect, Edge[Style], BF_RECT));
end;
function TWinCEWidgetSet.FrameRect(DC: HDC; const ARect: TRect;
hBr: HBRUSH) : integer;
begin
//roozbeh....works for now!
Result := Integer(DrawFocusRect(DC,Arect));
end;
function TWinCEWidgetSet.Frame(DC: HDC; const ARect: TRect): Integer;
begin
//roozbeh....works for now!
Result := Integer(DrawFocusRect(DC,Arect));
end;
{------------------------------------------------------------------------------
Method: GetActiveWindow
Params: none
Returns: The handle to the active window
Retrieves the window handle to the active window associated with the thread
that calls the function.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetActiveWindow: HWND;
begin
Result := Windows.GetActiveWindow;
end;
{function TWinCEWidgetSet.GetBitmapBits(Bitmap: HBITMAP; Count: Longint;
Bits: Pointer): Longint;
begin
Result:=inherited GetBitmapBits(Bitmap, Count, Bits);
end;
function TWinCEWidgetSet.GetBitmapRawImageDescription(Bitmap: HBITMAP;
Desc: PRawImageDescription): boolean;
begin
Result:=inherited GetBitmapRawImageDescription(Bitmap, Desc);
end;}
{------------------------------------------------------------------------------
Method: GetCapture
Params: none
Returns: the handle of the capture window
Retrieves the handle of the window (if any) that has captured the mouse.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetCapture: HWND;
begin
Result := Windows.GetCapture;
end;
{------------------------------------------------------------------------------
Method: GetCaretPos
Params: LPPoint - record to receive coordinates
Returns: if the function succeeds
Gets the caret's position, in client coordinates.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetCaretPos(var lpPoint: TPoint): Boolean;
begin
Result := Boolean(Windows.GetCaretPos(@LPPoint));
end;
{function TWinCEWidgetSet.GetCaretRespondToFocus(handle: HWND;
var ShowHideOnFocus: boolean): Boolean;
begin
Result:=inherited GetCaretRespondToFocus(handle, ShowHideOnFocus);
end;
function TWinCEWidgetSet.GetCharABCWidths(DC: HDC; p2, p3: UINT;
const ABCStructs): Boolean;
begin
Result:=inherited GetCharABCWidths(DC, p2, p3, ABCStructs);
end;
}
{------------------------------------------------------------------------------
Method: GetClientBounds
Params: Handle - handle of window
Rect - record for client coordinates
Returns: if the function succeeds
Retrieves the coordinates of a window's client area.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetClientBounds(Handle: HWND; var Rect: TRect): Boolean;
var
ARect: TRect;
begin
Result := Boolean(Windows.GetClientRect(Handle, @Rect));
if not Result then exit;
if not GetLCLClientBoundsOffset(Handle, ARect) then exit;
Inc(Rect.Left, ARect.Left);
Inc(Rect.Top, ARect.Top);
Inc(Rect.Right, ARect.Right);
Inc(Rect.Bottom, ARect.Bottom);
end;
{------------------------------------------------------------------------------
Method: GetClientRect
Params: Handle - handle of window
Rect - record for client coordinates
Returns: if the function succeeds
Retrieves the dimension of a window's client area.
Left and Top are always 0,0
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetClientRect(Handle: HWND; var Rect: TRect): Boolean;
begin
Result := GetClientBounds(Handle, Rect);
OffsetRect(Rect, -Rect.Left, -Rect.Top);
end;
{------------------------------------------------------------------------------
Function: GetClipBox
Params: dc, lprect
Returns: Integer
Returns the smallest rectangle which includes the entire current
Clipping Region.
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetClipBox(DC : hDC; lpRect : PRect) : Longint;
begin
Result := Windows.GetClipBox(DC, Windows.LPRECT(lpRect));
end;
{------------------------------------------------------------------------------
Function: GetClipRGN
Params: dc, rgn
Returns: Integer
Returns the current Clipping Region.
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetClipRGN(DC : hDC; RGN : hRGN) : Integer;
begin
Result := Windows.GetClipRGN(DC, RGN);
end;
{function TWinCEWidgetSet.GetCmdLineParamDescForInterface: string;
begin
Result:=inherited GetCmdLineParamDescForInterface;
end;}
function TWinCEWidgetSet.GetCursorPos(var lpPoint: TPoint): Boolean;
begin
Result := Boolean(Windows.GetCursorPos(@LPPoint));
end;
{------------------------------------------------------------------------------
Method: GetDC
Params: HWND - handle of window
Returns: value identifying the device context for the given window's client
area
Retrieves a handle of a display device context (DC) for the client area of
the specified window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetDC(HWnd: HWND): HDC;
var
ORect: TRect;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.GetDC] HWND: 0x%x', [HWnd]));
Result := Windows.GetDC(HWnd);
if (Result<>0) and (HWnd<>0)
and GetLCLClientBoundsOffset(HWnd, ORect) then begin
MoveWindowOrgEx(Result, ORect.Left, ORect.Top);
end;
Assert(False, Format('Trace:< [TWinCEWidgetSet.GetDC] Got 0x%x', [Result]));
end;
{function TWinCEWidgetSet.GetDCOriginRelativeToWindow(PaintDC: HDC;
WindowHandle: HWND; var OriginDiff: TPoint): boolean;
begin
Result:=inherited GetDCOriginRelativeToWindow(PaintDC, WindowHandle,
OriginDiff);
end;
function TWinCEWidgetSet.GetDesignerDC(WindowHandle: HWND): HDC;
begin
Result:=inherited GetDesignerDC(WindowHandle);
end;}
{------------------------------------------------------------------------------
Method: GetDeviceCaps
Params: DC - display device context
Index - index of needed capability
Returns device specific information
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetDeviceCaps(DC: HDC; Index: Integer): Integer;
begin
Result := Windows.GetDeviceCaps(DC, Index);
end;
function TWinCEWidgetSet.GetDCOriginRelativeToWindow(PaintDC: HDC;
WindowHandle: HWND; var OriginDiff: TPoint): boolean;
var
DCOrg, winOrg: Windows.POINT;
ORect: TRect;
begin
OriginDiff.X := 0;
OriginDiff.Y := 0;
//roozbeh changed
//Result := Windows.GetDCOrgEx(PaintDC, DCOrg);
DCOrg.X := 0;
DCOrg.Y := 0;
Result:=true;
if not Result then exit;
winOrg.X := 0;
winOrg.Y := 0;
Result := Windows.ClientToScreen(WindowHandle, @winOrg);
if not Result then exit;
Result := GetLCLClientBoundsOffset(WindowHandle, ORect);
if not Result then exit;
OriginDiff.X := DCOrg.X - winOrg.X - ORect.Left;
OriginDiff.Y := DCOrg.Y - winOrg.Y - ORect.Top;
// Result := Windows.GetWindowOrgEx(PaintDC, winOrg);
Result := true;
winOrg.X := 0;
winOrg.Y := 0;
if not Result then exit;
dec(OriginDiff.X, winOrg.X);
dec(OriginDiff.Y, winOrg.Y);
end;
function TWinCEWidgetSet.CreateDIBitmap(DC: HDC; var InfoHeader: TBitmapInfoHeader;
dwUsage: DWORD; InitBits: PChar; var InitInfo: TBitmapInfo;
wUsage: UINT): HBITMAP;
var
hbit,htargetbit : HBITMAP;
lpDestBits : PChar;
dwLen : longint;
lpH:TBitmapInfoHeader;
orig_bitcount,nPadWidth,pad:integer;
i,dwError:longint;
d:PByte;
s,s0:PWord;
pixel:word;
dc2:HDC;
begin
nPadWidth := 4;
lpH := InfoHeader;
lpH.biSize:=sizeof(TBitmapInfoHeader);
if lpH.biWidth mod nPadWidth <> 0 then
pad := nPadWidth - lpH.biWidth mod nPadWidth;
// there are problems with padding. i dont know the rules
// anymore...
pad := 0;
// This is wrong when the infoheader is followed by color data...
// We hope that biSizeImage is set then...
dwLen := ((lpH.biWidth+pad) * abs(lpH.biHeight) * lpH.biBitCount) div 8;
// includes colordata, if any...
if lpH.biSizeImage <> 0 then
dwLen := lpH.biSizeImage;
orig_bitcount := lpH.biBitCount;
{if unaligned(InitInfo.bmiHeader.biBitCount) = 16 then
unaligned(InitInfo.bmiHeader.biBitCount) := 24;}
{hbit := windows.CreateDIBSection( dc, windows.PBITMAPINFO(@lph)^,
DIB_RGB_COLORS, lpDestBits, 0, 0);}
//getmem(lpDestBits,dwLen);
hbit := Windows.CreateBitmap( lpH.biWidth, abs(lpH.biHeight),1,InitInfo.bmiHeader.biBitCount,InitBits);
//dc2:=windows.getdc(0);
//htargetbit := Windows.CreateCompatibleBitmap( dc2,lpH.biWidth, abs(lpH.biHeight));
//SelectObject(dc,hbit);
//SelectObject(dc2,htargetbit);
//BitBlt(dc2,0, 0, lpH.biWidth, abs(lpH.biHeight), Dc, 0, 0, SRCPAINT);
result := hbit;
//DeleteObject(dc2);
//DeleteObject(hbit);
exit;
//hbit := CreateDIBSection(dc, InitInfo, DIB_RGB_COLORS, lpDestBits, 0, 0);
//if (hbit <> 0) then
begin
if (orig_bitcount = 16) then
begin
if (lpH.biCompression = BI_RGB) then
begin
s := PWord(InitBits);
d := PByte(lpDestBits);
//s0 := PWord(lpDestBits);
// There is a bug in this code when padding was used!
// how do you get the full color range from 5 bits???
// shifting left seems to be ok...
dwLen := dwLen shr 1;
for i := 0 to dwLen-1 do
begin
d^ := ((s^ shr 0) and $1F) shl 3;
inc(d);
d^ := ((s^ shr 5) and $1F) shl 3;
inc(d);
d^ := ((s^ shr 10) and $1F) shl 3;
inc(d);
s:=s+2;
end;
end else begin
move(lpDestBits^, InitBits^, dwLen);
//fillchar(lpDestBits^,100,dwlen);
end;
end else begin
move(lpDestBits^, InitBits^, dwLen);
end;
hbit := Windows.CreateBitmap( lpH.biWidth, abs(lpH.biHeight), InitInfo.bmiHeader.biPlanes,
InitInfo.bmiHeader.biBitCount, lpDestBits );
result := hbit;
freemem(lpDestBits);
exit;
end;
dwError := GetLastError();
//writeln('Cannot create bitmap: %d');
result := HBITMAP(GDI_ERROR);
end;
function TWinCEWidgetSet.CreateDIBSection(DC: HDC; const p2: tagBitmapInfo; p3: UINT;
var p4: Pointer; p5: THandle; p6: DWORD): HBITMAP;
begin
Result := Windows.CreateDIBSection(DC, Windows.PBitmapInfo(@p2)^, p3, p4, p5, p6)
end;
{------------------------------------------------------------------------------
Method: GetFocus
Params: none
Returns: The handle of the window with focus
The GetFocus function retrieves the handle of the window that has the focus.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetFocus: HWND;
begin
Result := Windows.GetFocus;
end;
{------------------------------------------------------------------------------
Method: GetForegroundWindow
Params: none
Returns: The handle of the foreground window
The GetForegroundWindow function returns the window that the user is
currently working with, session wide.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetForegroundWindow: HWND;
begin
Result := Windows.GetForegroundWindow;
end;
{function TWinCEWidgetSet.GetFontLanguageInfo(DC: HDC): DWord;
begin
Result:=inherited GetFontLanguageInfo(DC);
end;
function TWinCEWidgetSet.GetKeyState(nVirtKey: Integer): Smallint;
begin
Result:=inherited GetKeyState(nVirtKey);
end;}
{------------------------------------------------------------------------------
Method: GetObject
Params: GDIObj - handle to graphics object of interest
BufSize - size of buffer for object information
Buf - pointer to buffer for object information
Returns: the number of bytes stored into the buffer
Gets information about a specified graphics object.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetObject(GDIObj: HGDIOBJ; BufSize: Integer; Buf: Pointer): Integer;
begin
Assert(False, 'Trace:[TWinCEWidgetSet.GetObject]');
Result := Windows.GetObject(GDIObj, BufSize, Buf);
end;
{------------------------------------------------------------------------------
Method: GetParent
Params: Handle - handle of child window
Returns: the handle of the parent window
Retrieves the handle of the specified child window's parent window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetParent(Handle: HWND): HWND;
begin
Result := Windows.GetParent(Handle);
end;
{------------------------------------------------------------------------------
Method: GetProp
Params: Handle - handle of window
Str - string
Returns: the associated data
Retrieves a pointer to data from the property list of the given window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetProp(Handle: hwnd; Str: PChar): Pointer;
var
WideStr: widestring;
begin
WideStr := UTF8Decode(String(str));
{$ifdef win32}
Result := Pointer(Windows.GetPropW(Handle, PWideChar(WideStr)));
{$else}
Result := Pointer(Windows.GetProp(Handle, PWideChar(WideStr)));
{$endif}
end;
{function TWinCEWidgetSet.GetRawImageFromDevice(SrcDC: HDC;
const SrcRect: TRect; var NewRawImage: TRawImage): boolean;
begin
Result:=inherited GetRawImageFromDevice(SrcDC, SrcRect, NewRawImage);
end;
function TWinCEWidgetSet.GetRawImageFromBitmap(SrcBitmap,
SrcMaskBitmap: HBITMAP; const SrcRect: TRect; var NewRawImage: TRawImage
): boolean;
begin
Result:=inherited GetRawImageFromBitmap(SrcBitmap, SrcMaskBitmap, SrcRect,
NewRawImage);
end;
function TWinCEWidgetSet.GetRgnBox(RGN: HRGN; lpRect: PRect): Longint;
begin
Result:=inherited GetRgnBox(RGN, lpRect);
end;}
{------------------------------------------------------------------------------
Method: GetROP2
Params: DC - Handle of the device context
Returns: 0 if unsuccessful, the current Foreground Mixing Mode if successul
Retrieves the current Foreground Mixing Mode in the given device context
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.GetROP2(DC: HDC): Integer;
begin
Result := Windows.GetROP2(DC); // not found
end;}
{function TWinCEWidgetSet.GetScrollBarSize(Handle: HWND; BarKind: Integer
): integer;
begin
Result:=inherited GetScrollBarSize(Handle, BarKind);
end;
function TWinCEWidgetSet.GetScrollbarVisible(Handle: HWND; SBStyle: Integer
): boolean;
begin
Result:=inherited GetScrollbarVisible(Handle, SBStyle);
end;}
{------------------------------------------------------------------------------
Method: GetScrollInfo
Params: Handle - handle of window with scroll bar
BarFlag - scroll bar flag
ScrollInfo - record for scroll parameters
Returns: if the function retrieved any values.
Retrieves the parameters of a scroll bar.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetScrollInfo(Handle: HWND; BarFlag: Integer; var ScrollInfo: TScrollInfo): Boolean;
begin
ScrollInfo.cbSize:=sizeof(ScrollInfo);
Assert(False, 'Trace:TODO: [TWinCEWidgetSet.GetScrollInfo]');
Result := Boolean(Windows.GetScrollInfo(Handle, BarFlag, @ScrollInfo));
end;
{------------------------------------------------------------------------------
Method: GetStockObject
Params: Value - type of stock object
Returns: a value identifying the logical object requested
Retrieves a handle to one of the predefined stock objects.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetStockObject(Value: Integer): THandle;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.GetStockObject] %d ', [Value]));
Result := Windows.GetStockObject(Value);
Assert(False, Format('Trace:< [TWinCEWidgetSet.GetStockObject] %d --> 0x%x', [Value, Result]));
end;
{------------------------------------------------------------------------------
Method: GetSysColor
Params: NIndex - display element whose color is to be retrieved
Returns: RGB value
Retrieves the current color of the specified display element.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetSysColor(NIndex: Integer): DWORD;
begin
if NIndex = COLOR_FORM then
NIndex := COLOR_BTNFACE;
{ SYS_COLOR_INDEX_FLAG is indispensable on Windows CE }
Result := Windows.GetSysColor(nIndex or SYS_COLOR_INDEX_FLAG);
end;
{------------------------------------------------------------------------------
Method: GetSystemMetrics
Params: NIndex - system metric to retrieve
Returns: the requested system metric
Retrieves various system metrics.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetSystemMetrics(NIndex: Integer): Integer;
begin
Assert(False, Format('Trace:[TWinCEWidgetSet.GetSystemMetrics] %s', [IntToStr(NIndex)]));
Result := Windows.GetSystemMetrics(NIndex);
Assert(False, Format('Trace:[TWinCEWidgetSet.GetSystemMetrics] %s --> 0x%S (%s)', [IntToStr(NIndex), IntToHex(Result, 8), IntToStr(Result)]));
end;
function TWinCEWidgetSet.GetTextColor(DC: HDC): TColorRef;
begin
Result := Windows.GetTextColor(DC);
end;
function TWinCEWidgetSet.UpdateWindow(Handle: HWND): Boolean;
begin
Result := Windows.UpdateWindow(Handle);
end;
{------------------------------------------------------------------------------
Method: GetTextExtentPoint
Params: DC - handle of device context
Str - text string
Count - number of characters in string
Size - TSize record in which the dimensions of the string are to be
returned
Returns: if the function succeeded
Computes the width and height of the specified string of text.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetTextExtentPoint(DC: HDC; Str: PChar; Count: Integer; var Size: TSize): Boolean;
var
s: AnsiString;
w: WideString;
begin
Assert(False, 'Trace:[TWinCEWidgetSet.GetTextExtentPoint] - Start');
if count = -1 then
s := str
else
begin
SetLength(s, count);
move(str^, s[1], count);
end;
// the length of utf8 vs Wide/Ansi the strings differ, so recalc.
// TODO: use the real number of chars (and not the lenght)
w := Utf8Decode(S);
Result := Windows.GetTextExtentPoint32W(DC, PWideChar(W), Length(W),
{$ifdef Win32}@Size{$else}Size{$endif});
// Result := Boolean(Windows.GetTextExtentExPointW(DC, WideStr, Count, 0,nil,nil,@Size));
Assert(False, 'Trace:[TWinCEWidgetSet.GetTextExtentPoint] - Exit');
end;
{------------------------------------------------------------------------------
Method: GetTextMetrics
Params: DC - handle of device context
TM - text metrics record
Returns: if the function succeeds
Fills the specified buffer with the metrics for the currently selected font.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetTextMetrics(DC: HDC; var TM: TTextMetric): Boolean;
var
tmw: TTextMetricW;
begin
Assert(False, Format('Trace:> TODO FINISH[TWinCEWidgetSet.GetTextMetrics] DC: 0x%x', [DC]));
Result := Boolean(Windows.GetTextMetrics(DC, @TMw));
TM.tmHeight:= TMW.tmHeight;
TM.tmAscent:= TMW.tmAscent;
TM.tmDescent:= TMW.tmDescent;
TM.tmInternalLeading:= TMW.tmInternalLeading;
TM.tmExternalLeading:= TMW.tmExternalLeading;
TM.tmAveCharWidth:= TMW.tmAveCharWidth;
TM.tmMaxCharWidth:= TMW.tmMaxCharWidth;
TM.tmWeight:= TMW.tmWeight;
TM.tmOverhang:= TMW.tmOverhang;
TM.tmDigitizedAspectX:= TMW.tmDigitizedAspectX;
TM.tmDigitizedAspectY:= TMW.tmDigitizedAspectY;
TM.tmFirstChar:= TMW.tmFirstChar;
TM.tmLastChar:= TMW.tmLastChar;
TM.tmDefaultChar:= TMW.tmDefaultChar;
TM.tmBreakChar:= TMW.tmBreakChar;
TM.tmItalic:= TMW.tmItalic;
TM.tmUnderlined:= TMW.tmUnderlined;
TM.tmStruckOut:= TMW.tmStruckOut;
TM.tmPitchAndFamily:= TMW.tmPitchAndFamily;
TM.tmCharSet:= TMW.tmCharSet;
Assert(False, Format('Trace:< TODO FINISH[TWinCEWidgetSet.GetTextMetrics] DC: 0x%x', [DC]));
end;
{------------------------------------------------------------------------------
Method: GetWindowLong
Params: Handle - handle of window
Int - value to retrieve
Returns: the requested 32-bit value
Retrieves information about the specified window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetWindowLong(Handle: HWND; Int: Integer): PtrInt;
begin
//TODO:Started but not finished
Assert(False, Format('Trace:> [TWinCEWidgetSet.GETWINDOWLONG] HWND: 0x%x, int: 0x%x (%d)', [Handle, int, int]));
Result := Windows.GetWindowLong(Handle, int);
Assert(False, Format('Trace:< [TWinCEWidgetSet.GETWINDOWLONG] HWND: 0x%x, int: 0x%x (%d) --> 0x%x (%d)', [Handle, int, int, Result, Result]));
end;
{------------------------------------------------------------------------------
Method: GetWindowOrgEx
Params: DC - handle of device context
P - record receiving the window origin
Returns: 0 if the function fails; non-zero integer otherwise
Retrieves the x-coordinates and y-coordinates of the window origin for the
specified device context.
------------------------------------------------------------------------------}
{
//roozbeh:not in wince?//not even getviewportorgex?!
function TWinCEWidgetSet.GetWindowOrgEx(DC: HDC; P: PPoint): Integer;
begin
Result := Integer(Windows.GetWindowOrgEx(DC, LPPoint(P)));
end;
}
{------------------------------------------------------------------------------
Method: GetWindowRect
Params: Handle - handle of window
Rect - record for window coordinates
Returns: if the function succeeds, the return value is nonzero; if the
function fails, the return value is zero
Retrieves the dimensions of the bounding rectangle of the specified window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetWindowRect(Handle: HWND; var Rect: TRect): Integer;
begin
Result := Integer(Windows.GetWindowRect(Handle, @Rect));
end;
{------------------------------------------------------------------------------
Function: GetWindowRelativePosition
Params: Handle : HWND;
Returns: true on success
returns the current widget Left, Top, relative to the client origin of its
parent
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetWindowRelativePosition(Handle : HWND;
var Left, Top:integer): boolean;
var
LeftTop:TPoint;
R: TRect;
ParentHandle: THandle;
WindowInfo: PWindowInfo;
begin
Result:=false;
WindowInfo := GetWindowInfo(Handle);
// if (WindowInfo^.WinControl is TCustomFloatSpinEdit) then
// Handle := Windows.SendMessage(Handle, UDM_GETBUDDY, 0, 0);
if not Windows.GetWindowRect(Handle,@R) then exit;
LeftTop.X:=R.Left;
LeftTop.Y:=R.Top;
ParentHandle:=Windows.GetParent(Handle);
if ParentHandle<>0 then
begin
if not Windows.ScreenToClient(ParentHandle,@LeftTop) then exit;
if not GetLCLClientBoundsOffset(ParentHandle, R) then
exit;
dec(LeftTop.X, R.Left);
dec(LeftTop.Y, R.Top);
end;
Left:=LeftTop.X;
Top:=LeftTop.Y;
Result:=true;
end;
{------------------------------------------------------------------------------
Function: GetWindowSize
Params: Handle : hwnd;
Returns: true on success
Returns the current widget Width and Height
------------------------------------------------------------------------------}
function TWinCEWidgetSet.GetWindowSize(Handle : hwnd;
var Width, Height: integer): boolean;
var
WP: WINDOWPLACEMENT;
R: TRect;
Style, ExStyle: LongInt;
WindowInfo: PWindowInfo;
procedure AdjustForBuddySize;
var
BuddyWidth, BuddyHeight: integer;
begin
GetWindowSize(Windows.SendMessage(Handle, UDM_GETBUDDY, 0, 0), BuddyWidth, BuddyHeight);
Inc(Width, BuddyWidth);
end;
begin
WP.length := SizeOf(WP);
// Result := Boolean(Windows.GetWindowPlacement(Handle, WP));
// if (WP.showCmd=SW_MAXIMIZE) then
begin
// if the form is maximized, you can't use the normal size
Result := Boolean(Windows.GetWindowRect(Handle,@R));
with R do
begin
Width := Right - Left;
Height := Bottom - Top;
end;
end;
{ else
with WP.rcNormalPosition do
begin
Width := Right - Left;
Height := Bottom - Top;
end;}
WindowInfo := GetWindowInfo(Handle);
//debugln('TWinCEWidgetSet.GetWindowSize ',DbgSName(WindowInfo^.WinControl),' SW_MAXIMIZE=',dbgs(WP.showCmd=SW_MAXIMIZE),' ',dbgs(WP.rcNormalPosition));
// convert top level lcl window coordinaties to win32 coord
Style := Windows.GetWindowLong(Handle, GWL_STYLE);
ExStyle := Windows.GetWindowLong(Handle, GWL_EXSTYLE);
if (Style and WS_THICKFRAME) <> 0 then
begin
// thick, sizing border
// add twice, top+bottom border
Dec(Width, 2*Windows.GetSystemMetrics(SM_CXSIZEFRAME));
Dec(Height, 2*Windows.GetSystemMetrics(SM_CYSIZEFRAME));
end else
if (Style and WS_BORDER) <> 0 then
begin
// thin, non-sizing border
Dec(Width, 2*Windows.GetSystemMetrics(SM_CXFIXEDFRAME));
Dec(Height, 2*Windows.GetSystemMetrics(SM_CYFIXEDFRAME));
end;
if (Style and WS_CAPTION) <> 0 then
if (ExStyle and WS_EX_TOOLWINDOW) <> 0 then
Dec(Height, Windows.GetSystemMetrics(SM_CYSMCAPTION))
else
Dec(Height, Windows.GetSystemMetrics(SM_CYCAPTION));
// if (WindowInfo^.WinControl is TCustomFloatSpinEdit) then
// AdjustForBuddySize;
end;
{
function TWinCEWidgetSet.GradientFill(DC: HDC; Vertices: PTriVertex;
NumVertices: Longint; Meshes: Pointer; NumMeshes: Longint; Mode: Longint
): Boolean;
begin
Result:=inherited GradientFill(DC, Vertices, NumVertices, Meshes, NumMeshes,
Mode);
end;}
{------------------------------------------------------------------------------
Method: HideCaret
Params: HWnd - handle to the window with the caret
Returns: Whether the window owns the caret
Removes the caret from the screen.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.HideCaret(hWnd: HWND): Boolean;
begin
Result := Boolean(Windows.HideCaret(hWnd));
end;
{------------------------------------------------------------------------------
Method: InvalidateRect
Params: AHandle - handle of window with changed update region
Rect - address of rectangle coordinates
BErase - specifies whether the background is to be erased
Returns: if the function succeeds
Adds a rectangle to the specified window's update region.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.InvalidateRect(aHandle: HWND; Rect: PRect; BErase: Boolean): Boolean;
var
Flags: UINT;
ORect: TRect;
begin
Flags := RDW_INVALIDATE or RDW_ALLCHILDREN;
if BErase then
Flags := Flags or RDW_ERASE;
if Rect <> nil then
begin
GetLCLClientBoundsOffset(aHandle, ORect);
OffsetRect(Rect^, ORect.Left, ORect.Top);
end;
Result := Boolean(Windows.RedrawWindow(aHandle, Rect, 0, Flags));
end;
{------------------------------------------------------------------------------
Function: IntersectClipRect
Params: dc, Left, Top, Right, Bottom
Returns: Integer
Shrinks the clipping region in the device context dc to a region of all
intersecting points between the boundary defined by Left, Top, Right,
Bottom , and the Current clipping region.
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.IntersectClipRect(dc: hdc;
Left, Top, Right, Bottom: Integer): Integer;
begin
Result := Windows.IntersectClipRect(DC, Left, Top, Right, Bottom);
end;
{------------------------------------------------------------------------------
Method: IsWindowEnabled
Params: handle - window handle
Returns: true if window is enabled, false otherwise
------------------------------------------------------------------------------}
function TWinCEWidgetSet.IsWindowEnabled(handle: HWND): boolean;
begin
Result := Boolean(Windows.IsWindowEnabled(handle));
end;
{------------------------------------------------------------------------------
Method: IsWindowVisible
Params: handle - window handle
Returns: true if window is visible, false otherwise
------------------------------------------------------------------------------}
function TWinCEWidgetSet.IsWindowVisible(handle: HWND): boolean;
begin
Result := Boolean(Windows.IsWindowVisible(handle));
end;
{------------------------------------------------------------------------------
Method: LineTo
Params: DC - device context handle
X - x-coordinate of line's ending point
Y - y-coordinate of line's ending point
Returns: if the function succeeds
Draws a line from the current position up to, but not including, the specified point.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.LineTo(DC: HDC; X, Y: Integer): Boolean;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.LineTo] DC:0x%x, X:%d, Y:%d', [DC, X, Y]));
Result := Boolean(Windows.LineTo(DC, X, Y));
Assert(False, Format('Trace:< [TWinCEWidgetSet.LineTo] DC:0x%x, X:%d, Y:%d', [DC, X, Y]));
end;
{------------------------------------------------------------------------------
Method: MessageBox
Params: HWnd - The handle of parent window
LPText - text in message box
LPCaption - title of message box
UType - style of message box
Returns: 0 if not successful (out of memory), otherwise one of the defined
values:
IDABORT
IDCANCEL
IDIGNORE
IDNO
IDOK
IDRETRY
IDYES
The MessageBox function displays a modal dialog, with text and caption defined,
and includes buttons.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.MessageBox(HWnd: HWND; LPText, LPCaption: PChar; UType: Cardinal): Integer;
var
WideLPText, WideLPCaption: widestring;
begin
WideLPText := UTF8Decode(string(LPText));
WideLPCaption := UTF8Decode(string(LPCaption));
Result := Windows.MessageBoxW(HWnd, PWideChar(WideLPText),
PWideChar(WideLPCaption), UType);
end;
{------------------------------------------------------------------------------
Method: MoveToEx
Params: DC - handle of device context
X - x-coordinate of new current position
Y - x-coordinate of new current position
OldPoint - address of old current position
Returns: if the function succeeds.
Updates the current position to the specified point.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.MoveToEx(DC: HDC; X, Y: Integer; OldPoint: PPoint): Boolean;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.MoveToEx] DC:0x%x, X:%d, Y:%d', [DC, X, Y]));
Result := Boolean(Windows.MoveToEx(DC, X, Y, LPPOINT(OldPoint)));
Assert(False, Format('Trace:< [TWinCEWidgetSet.MoveToEx] DC:0x%x, X:%d, Y:%d', [DC, X, Y]));
end;
{function TWinCEWidgetSet.MoveWindowOrgEx(DC: HDC; dX, dY: Integer): Boolean;
begin
Result:=inherited MoveWindowOrgEx(DC, dX, dY);
end;
function TWinCEWidgetSet.PolyBezier(DC: HDC; Points: PPoint; NumPts: Integer;
Filled, Continuous: boolean): boolean;
begin
Result:=inherited PolyBezier(DC, Points, NumPts, Filled, Continuous);
end;}
{------------------------------------------------------------------------------
Method: PeekMessage
Params: LPMsg - Where it should put the message
Handle - Handle of the window (thread)
WMsgFilterMin - Lowest MSG to grab
WMsgFilterMax - Highest MSG to grab
WRemoveMsg - Should message be pulled out of the queue
Returns: Boolean if an event was there
Checks a thread message queue for a message.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.PeekMessage(var LPMsg: TMsg; Handle: HWND; WMsgFilterMin, WMsgFilterMax, WRemoveMsg: UINT): Boolean;
begin
Result := Boolean(Windows.PeekMessage(@LPMsg, Handle, WMsgFilterMin, WMsgFilterMax, WRemoveMsg));
end;
{------------------------------------------------------------------------------
Method: Polygon
Params: DC - handle to device context
Points - pointer to polygon's vertices
NumPts - count of polygon's vertices
Winding
Returns: if the function succeeds
Use Polygon to draw a closed, many-sided shape on the canvas, using the value
of Pen. After drawing the complete shape, Polygon fills the shape using the
value of Brush.
The Points parameter is an array of points that give the vertices of the
polygon.
Winding determines how the polygon is filled.
When Winding is True, Polygon
fills the shape using the Winding fill algorithm. When Winding is False,
Polygon uses the even-odd (alternative) fill algorithm.
NumPts indicates the number of points to use.
The first point is always connected to the last point.
To draw a polygon on the canvas, without filling it, use the Polyline method,
specifying the first point a second time at the end.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.Polygon(DC: HDC; Points: PPoint; NumPts: Integer; Winding: Boolean): Boolean;
var
PFMode : Longint;
begin
Assert(False, Format('Trace:TWinCEWidgetSet.Polygon --> DC: 0x%X, Number of points: %D, Use winding fill: %S', [DC, NumPts, BOOL_RESULT[Winding]]));
// if Winding then
// PFMode := SetPolyFillMode(DC, Windows.WINDING)
// else
// PFMode := SetPolyFillMode(DC, Windows.ALTERNATE);
Result := Boolean(Windows.Polygon(DC, LPPOINT(Points), NumPts));
// SetPolyFillMode(DC, PFMode);
end;
{------------------------------------------------------------------------------
Method: Polyline
Params: DC - handle of device context
Points - address of array containing endpoints
NumPts - number of points in the array
Returns: if the function succeeds
Draws a series of line segments by connecting the points in the specified
array.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.Polyline(DC: HDC; Points: PPoint; NumPts: Integer): Boolean;
begin
Result := Boolean(Windows.Polyline(DC, LPPOINT(Points), NumPts));
end;
{------------------------------------------------------------------------------
Method: PostMessage
Params: Handle - handle of destination window
Msg - message to post
WParam - first message parameter
LParam - second message parameter
Returns: True if succesful
The PostMessage function places (posts) a message in the message queue and
then returns without waiting.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.PostMessage(Handle: HWND; Msg: Cardinal; WParam: WParam; LParam: LParam): Boolean;
begin
Result := Boolean(Windows.PostMessage(Handle, Msg, WParam, LParam));
end;
{------------------------------------------------------------------------------
Method: RadialArc
Params: DC, left, top, right, bottom, sx, sy, ex, ey
Returns: Nothing
Use RadialArc to draw an elliptically curved line with the current Pen. The
values sx,sy, and ex,ey represent the starting and ending radial-points
between which the Arc is drawn.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.RadialArc(DC: HDC; x, y, width, height, sx, sy, ex,
ey: Integer): Boolean;
begin
Result:=inherited RadialArc(DC, x, y, width, height, sx, sy, ex, ey);
end;}
{------------------------------------------------------------------------------
Method: RadialChord
Params: DC, x1, y1, x2, y2, sx, sy, ex, ey
Returns: Nothing
Use RadialChord to draw a filled Chord-shape on the canvas. The values sx,sy,
and ex,ey represent the starting and ending radial-points between which
the bounding-Arc is drawn.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.RadialChord(DC: HDC; x, y, width, height, sx, sy, ex,
ey: Integer): Boolean;
begin
Result:=inherited RadialChord(DC, x, y, width, height, sx, sy, ex, ey);
end;}
{------------------------------------------------------------------------------
Method: RealizePalette
Params: DC - handle of device context
Returns: number of entries in the logical palette mapped to the system
palette
Maps palette entries from the current logical palette to the system palette.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.RealizePalette(DC: HDC): Cardinal;
begin
Result:=inherited RealizePalette(DC);
end;}
{------------------------------------------------------------------------------
Method: Rectangle
Params: DC - handle of device context
X1 - x-coordinate of bounding rectangle's upper-left corner
Y1 - y-coordinate of bounding rectangle's upper-left corner
X2 - x-coordinate of bounding rectangle's lower-right corner
Y2 - y-coordinate of bounding rectangle's lower-right corner
Returns: if the function succeeds
The Rectangle function draws a rectangle. The rectangle is outlined by using
the current pen and filled by using the current brush.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.Rectangle(DC: HDC; X1, Y1, X2, Y2: Integer): Boolean;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.Rectangle] DC:0x%x, X1:%d, Y1:%d, X2:%d, Y2:%d', [DC, X1, Y1, X2, Y2]));
Result := Boolean(Windows.Rectangle(DC, X1, Y1, X2+1, Y2+1));
Assert(False, Format('Trace:< [TWinCEWidgetSet.Rectangle] DC:0x%x, X1:%d, Y1:%d, X2:%d, Y2:%d', [DC, X1, Y1, X2, Y2]));
end;
function TWinCEWidgetSet.RectVisible(dc : hdc; const ARect: TRect) : Boolean;
begin
Result := Boolean(Windows.RectVisible(DC, LPRECT(@ARect)^));
end;
{------------------------------------------------------------------------------
Function: RemoveProp
Params: Handle: Handle of the object
Str: Name of the property to remove
Returns: The handle of the property (0=failure)
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.RemoveProp(Handle: hwnd; Str: PChar): THandle;
begin
Result:=inherited RemoveProp(Handle, Str);
end;}
{function TWinCEWidgetSet.RegroupMenuItem(hndMenu: HMENU; GroupIndex: integer
): Boolean;
begin
Result:=inherited RegroupMenuItem(hndMenu, GroupIndex);
end;}
{------------------------------------------------------------------------------
Method: ReleaseCapture
Params: none
Returns: True if succesful
The ReleaseCapture function releases the mouse capture from a window
and restores normal mouse input processing.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ReleaseCapture: Boolean;
begin
Result := Boolean(Windows.ReleaseCapture);
end;
{------------------------------------------------------------------------------
Method: ReleaseDC
Params: HWnd - handle of window
DC - handle of device context
Returns: 1 if the device context was released or 0 if it wasn't
Releases a device context (DC), freeing it for use by other applications.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ReleaseDC(Window: HWND; DC: HDC): Integer;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.ReleaseDC] DC:0x%x', [DC]));
Result := Windows.ReleaseDC(Window, DC);
Assert(False, Format('Trace:< [TWinCEWidgetSet.ReleaseDC] DC:0x%x', [DC]));
end;
{------------------------------------------------------------------------------
Method: RestoreDC
Params: DC - handle of device context
SavedDC - state to be restored
Returns: if the function succeeds
Restores a device context (DC) to the specified state.
-------------------------------------------------------------------------------}
function TWinCEWidgetSet.RestoreDC(DC: HDC; SavedDC: Integer): Boolean;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.RestoreDC] DC:0x%x, SavedDC: %d', [DC, SavedDC]));
Result := Boolean(Windows.RestoreDC(DC, SavedDC));
// Assert(False, Format('Trace:< [TWinCEWidgetSet.RestoreDC] DC:0x%x, Saved: %d --> %s', [Integer(DC), SavedDC, BOOL_TEXT[Result]]));
end;
{------------------------------------------------------------------------------
Method: RoundRect
Params: DC, X1, Y1, X2, Y2, RX, RY
Returns: true if succesfull, false otherwise
Draws a Rectangle with optional rounded corners. RY is the radial height
of the corner arcs, RX is the radial width.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.RoundRect(DC: HDC; X1, Y1, X2, Y2: Integer; RX, RY : Integer): Boolean;
begin
Result := Windows.RoundRect(DC, X1, Y1, X2, Y2, RX, RY);
end;
{------------------------------------------------------------------------------
Method: SaveDC
Params: DC - a DC to save
Returns: 0 if the functions fails otherwise a positive integer identifing
the saved DC
The SaveDC function saves the current state of the specified device
context (DC) by copying its elements to a context stack.
-------------------------------------------------------------------------------}
function TWinCEWidgetSet.SaveDC(DC: HDC): Integer;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.SaveDC] 0x%x', [Integer(DC)]));
Result := Windows.SaveDC(DC);
Assert(False, Format('Trace:< [TWinCEWidgetSet.SaveDC] 0x%x --> %d', [Integer(DC), Result]));
end;
{------------------------------------------------------------------------------
Method: ScreenToClient
Params: Handle - window handle for source coordinates
P - record containing coordinates
Returns: if the function succeeds, the return value is nonzero; if the
function fails, the return value is zero
Converts the screen coordinates of a specified point on the screen to client
coordinates.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ScreenToClient(Handle: HWND; var P: TPoint): Integer;
begin
Result := Integer(Windows.ScreenToClient(Handle, @P));
end;
{------------------------------------------------------------------------------
Method: ScrollWindowEx
Params: HWnd - handle of window to scroll
DX - horizontal amount to scroll
DY - vertical amount to scroll
PRcScroll - pointer to scroll rectangle
PRcClip - pointer to clip rectangle
HRgnUpdate - handle of update region
PRcUpdate - pointer to update rectangle
Flags - scrolling flags
Returns: True if succesfull
The ScrollWindowEx function scrolls the content of the specified window's
client area
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ScrollWindowEx(HWnd: HWND; DX, DY: Integer; PRcScroll, PRcClip: PRect; HRgnUpdate: HRGN; PRcUpdate: PRect; Flags: UINT): Boolean;
begin
Result := Windows.ScrollWindowEx(HWnd, DX, DY, Windows.RECT(PRcScroll^), Windows.RECT(PRcClip^), HRgnUpdate, LPRECT(PRcUpdate), Flags) <> ERROR;
end;
{------------------------------------------------------------------------------
Function: SelectClipRGN
Params: DC, RGN
Returns: longint
Sets the DeviceContext's ClipRegion. The Return value
is the new clip regions type, or ERROR.
The result can be one of the following constants
Error
NullRegion
SimpleRegion
ComplexRegion
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SelectClipRGN(DC : hDC; RGN : HRGN) : Longint;
begin
Result := Windows.SelectClipRGN(DC, RGN);
end;
{------------------------------------------------------------------------------
Method: SelectObject
Params: DC - handle of device context
GDIObj - handle of object
Returns: he handle of the object being replaced
Selects an object into the specified device context.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SelectObject(DC: HDC; GDIObj: HGDIOBJ): HGDIOBJ;
begin
//TODO: Finish this;
Assert(False, Format('Trace:> [TWinCEWidgetSet.SelectObject] DC: 0x%x', [DC]));
Result := Windows.SelectObject(DC, GDIObj);
Assert(False, Format('Trace:< [TWinCEWidgetSet.SelectObject] DC: 0x%x --> 0x%x', [DC, Result]));
end;
{------------------------------------------------------------------------------
Method: SelectPalette
Params: DC - handle of device context
Palette - handle of logical color palette
ForceBackground - whether the logical palette is forced to be a
background palette
Returns: the device context's previous logical palette
Selects the specified logical palette into a device context.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.SelectPalette(DC: HDC; Palette: HPALETTE;
ForceBackground: Boolean): HPALETTE;
begin
Result:=inherited SelectPalette(DC, Palette, ForceBackground);
end;}
{------------------------------------------------------------------------------
Method: SendMessage
Params: HandleWnd - handle of destination window
Msg - message to send
WParam - first message parameter
LParam - second message parameter
Returns: the result of the message processing
The SendMessage function sends the specified message to a window or windows.
The function calls the window procedure for the specified window and does
not return until the window procedure has processed the message.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SendMessage(HandleWnd: HWND; Msg: Cardinal; WParam: WParam; LParam: LParam): LResult;
begin
Result := Windows.SendMessage(HandleWnd, Msg, WParam, LParam);
end;
{------------------------------------------------------------------------------
Method: SetActiveWindow
Params: Window - Window to focus
Returns: Old active window
Sets focus to the specified window, if the current process is on top
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetActiveWindow(Window: HWND): HWND;
begin
Result := Windows.SetActiveWindow(Window);
end;
{------------------------------------------------------------------------------
Method: SetBkColor
Params: DC - Device context to change the text background color
Color - background color value
Returns: Old Background color
Sets the current background color to the specified color value.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetBKColor(DC: HDC; Color: TColorRef): TColorRef;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.SetBKColor] DC: 0x%x Color: %8x', [Integer(DC), Color]));
Result := Windows.SetBkColor(DC, Windows.COLORREF(ColorToRGB(Color)));
Assert(False, Format('Trace:< [TWinCEWidgetSet.SetBKColor] DC: 0x%x Color: %8x --> %8x', [Integer(DC), Color, Result]));
end;
{------------------------------------------------------------------------------
Method: SetBkMode
Params: DC - handle of device context
BkMode - flag specifying background mode
Returns: the previous background mode
Sets the background mix mode of the specified device context.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetBkMode(DC: HDC; BkMode: Integer): Integer;
begin
// Your code here
Result := Windows.SetBkMode(DC, BkMode);
end;
{function TWinCEWidgetSet.SetComboMinDropDownSize(Handle: HWND; MinItemsWidth,
MinItemsHeight, MinItemCount: integer): boolean;
begin
Result:=inherited SetComboMinDropDownSize(Handle, MinItemsWidth,
MinItemsHeight, MinItemCount);
end;}
{------------------------------------------------------------------------------
Method: SetCapture
Params: Value - Handle of window to capture
Returns: the handle of the window that had previously captured the mouse
Sets the mouse capture to the specified window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetCapture(AHandle: HWND): HWND;
begin
Result := Windows.SetCapture(AHandle);
end;
{------------------------------------------------------------------------------
Method: SetCaretPos
Params: new position x, y
Returns: true on success
Moves the caret to the specified coordinates.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetCaretPos(X, Y: Integer): Boolean;
begin
Result := Boolean(Windows.SetCaretPos(X, Y));
end;
{------------------------------------------------------------------------------
Method: SetCaretPosEx
Params: Handle - handle of window
X - horizontal mouse coordinate
Y - vertical mouse coordinate
Returns: true on success
Moves the caret to the specified coordinates in the specified window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetCaretPosEx(Handle: HWnd; X, Y: Integer): Boolean;
begin
Result := Windows.SetCaretPos(X, Y);
end;
{function TWinCEWidgetSet.SetCaretRespondToFocus(handle: HWND;
ShowHideOnFocus: boolean): Boolean;
begin
Result:=inherited SetCaretRespondToFocus(handle, ShowHideOnFocus);
end;}
function TWinCEWidgetSet.SetCursor(hCursor: HICON): HCURSOR;
begin
Result := Windows.SetCursor(hCursor);
end;
{------------------------------------------------------------------------------
Function: SetCursorPos
Params: X:
Y:
Returns:
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.SetCursorPos(X, Y: Integer): Boolean;
begin
Result:=inherited SetCursorPos(X, Y);
end;}
{------------------------------------------------------------------------------
Method: SetFocus
Params: HWnd - Handle of new focus window
Returns: The old focus window
The SetFocus function sets the keyboard focus to the specified window
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetFocus(hWnd: HWND): HWND;
begin
Result := Windows.SetFocus(HWnd);
end;
{------------------------------------------------------------------------------
Method: SetProp
Params: Handle - handle of window
Str - string
Data - pointer to data
Returns: Whether the string and data were successfully added to the property
list.
Adds a new entry or changes an existing entry in the property list of the
specified window.
NOTE: LCLLinux has no RemoveProp function but Windows API requires all set
properties to be removed, so I'm keeping a list of windows with properties
for a properties-enumeration function that's called when the program is quit.
MWE: that is not really needed anymore since the RemoveProp is now implemented
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetProp(Handle: hwnd; Str: PChar; Data: Pointer): Boolean;
var
WideStr: widestring;
begin
WideStr := UTF8Decode(String(str));
{$ifdef win32}
Result := Boolean(Windows.SetPropW(Handle, PWideChar(WideStr), Windows.HANDLE(Data)));
{$else}
Result := Boolean(Windows.SetProp(Handle, PWideChar(WideStr), Windows.HANDLE(Data)));
{$endif}
end;
{------------------------------------------------------------------------------
Method: SetROP2
Params: DC - Device Context
Mode - Foreground mixing mode
Returns: 0 if unsuccessful or the old Mode if successful
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetROP2(DC: HDC; Mode: Integer): Integer;
begin
result := Windows.SetROP2(DC, Mode);
end;
{------------------------------------------------------------------------------
Method: SetScrollInfo
Params: Handle - handle of window with scroll bar
SBStyle - scroll bar flag
ScrollInfo - record with scroll parameters
BRedraw - is the scroll bar is redrawn?
Returns: The old position value
Sets the parameters of a scroll bar.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetScrollInfo(Handle: HWND; SBStyle: Integer; ScrollInfo: TScrollInfo; BRedraw: Boolean): Integer;
begin
// Assert(False, 'Trace:[TWinCEWidgetSet.SetScrollInfo]');
//with ScrollInfo do
// Assert(False, Format('Trace:> [TWinCEWidgetSet.SetScrollInfo] Mask:0x%x, Min:%d, Max:%d, Page:%d, Pos:%d', [FMask, NMin, NMax, NPage, NPos]));
ScrollInfo.cbSize:=sizeof(ScrollInfo);
if (ScrollInfo.fMask and SIF_Range > 0) then
ScrollInfo.nMax := Max(ScrollInfo.nMin, ScrollInfo.nMax - 1);
Result := Windows.SetScrollInfo(Handle, SBStyle, @ScrollInfo, BRedraw);
with ScrollInfo do
Assert(False, Format('Trace:> [TWinCEWidgetSet.SetScrollInfo] --> %d', [Result]));
end;
{------------------------------------------------------------------------------
Method: SetSysColors
Params: CElements - the number of elements
LPAElements - array with element numbers
LPARGBValues - array with colors
Returns: 0 if unsuccesful
The SetSysColors function sets the colors for one or more display elements.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetSysColors(CElements: Integer; const LPAElements; const LPARGBValues): Boolean;
begin
Result := Boolean(Windows.SetSysColors(CElements, PInteger(@LPAElements)^, LPColorRef(@LPARGBValues)^));
end;
{------------------------------------------------------------------------------
Method: SetTextCharacterExtra
Params: _HDC - handle of device context
NCharExtra - extra-space value
Returns: the previous intercharacter spacing
Sets the intercharacter spacing.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.SetTextCharacterExtra(_hdc: hdc; nCharExtra: Integer
): Integer;
begin
Result:=inherited SetTextCharacterExtra(_hdc, nCharExtra);
end;}
{------------------------------------------------------------------------------
Method: SetTextColor
Params: DC - Identifies the device context.
Color - Specifies the color of the text.
Returns: The previous color if succesful, CLR_INVALID otherwise
The SetTextColor function sets the text color for the specified device
context to the specified color.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetTextColor(DC: HDC; Color: TColorRef): TColorRef;
begin
Assert(False, Format('Trace:> [TWinCEWidgetSet.SetTextColor] DC: 0x%x Color: %8x', [Integer(DC), Color]));
Result := Windows.SetTextColor(DC, Windows.COLORREF(ColorToRGB(Color)));
Assert(False, Format('Trace:< [TWinCEWidgetSet.SetTextColor] DC: 0x%x Color: %8x --> %8x', [Integer(DC), Color, Result]));
end;
{------------------------------------------------------------------------------
Procedure: SetWindowLong
Params: Handle - handle of window
Idx - value to set
NewLong - new value
Returns: Nothing
Changes an attribute of the specified window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetWindowLong(Handle: HWND; Idx: Integer; NewLong: PtrInt): PtrInt;
begin
//TODO: Finish this;
Assert(False, Format('Trace:> [TWinCEWidgetSet.SETWINDOWLONG] HWND: 0x%x, Idx: 0x%x(%d), Value: 0x%x(%d)', [Handle, Idx, Idx, NewLong, NewLong]));
Result := Windows.SetWindowLong(Handle, Idx, NewLong);
Assert(False, Format('Trace:< [TWinCEWidgetSet.SETWINDOWLONG] HWND: 0x%x, Idx: 0x%x(%d), Value: 0x%x(%d) --> 0x%x(%d)', [Handle, Idx, Idx, NewLong, NewLong, Result, Result]));
end;
{------------------------------------------------------------------------------
Method: SetWindowOrgEx
Params: DC - handle of device context
NewX - new x-coordinate of window origin
NewY - new y-coordinate of window origin
Point - record receiving original origin
Returns: Whether the call was successful
Sets the window origin of the device context by using the specified coordinates.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetWindowOrgEx(DC: HDC; NewX, NewY: Integer;
OldPoint: PPoint): Boolean;
begin
{ roozbeh:does this always work?it is heavily used in labels and some other drawing controls}
Result := Boolean(SetViewPortOrgEx(DC, -NewX, -NewY, LPPoint(OldPoint)));
// Result:=inherited SetWindowOrgEx(dc, NewX, NewY, OldPoint);
end;
{------------------------------------------------------------------------------
Method: SetWindowPos
Params: HWnd - handle of window
HWndInsertAfter - placement-order handle
X - horizontal position
Y - vertical position
CX - width
CY - height
UFlags - window-positioning flags
Returns: if the function succeeds
Changes the size, position, and Z order of a child, pop-up, or top-level
window.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.SetWindowPos(HWnd: HWND; HWndInsertAfter: HWND; X, Y, CX, CY: Integer; UFlags: UINT): Boolean;
var
Style, ExStyle: Integer;
OldRect, OldClientRect: Windows.RECT;
begin
//debugln('[TWinCEWidgetSet.SetWindowPos] Top=',HWndInsertAfter=HWND_TOP);
Style := Windows.GetWindowLong(HWnd, GWL_STYLE);
ExStyle := Windows.GetWindowLong(HWnd, GWL_EXSTYLE);
Windows.GetWindowRect(HWnd, @OldRect);
Windows.GetClientRect(HWnd, @OldClientRect);
if (Style and WS_BORDER) <> 0 then
begin
// convert top level lcl window coordinaties to win32 coord
// add twice, top+bottom border
Inc(CX, 2*Windows.GetSystemMetrics(SM_CXSIZEFRAME));
Inc(CY, 2*Windows.GetSystemMetrics(SM_CYSIZEFRAME));
end;
if (Style and WS_CAPTION) <> 0 then
if (ExStyle and WS_EX_TOOLWINDOW) <> 0 then
Inc(CY, Windows.GetSystemMetrics(SM_CYSMCAPTION))
else
Inc(CY, Windows.GetSystemMetrics(SM_CYCAPTION));
Result := Boolean(Windows.SetWindowPos(HWnd, HWndInsertAfter, X, Y, CX, CY, UFlags));
end;
{------------------------------------------------------------------------------
Method: ShowCaret
Params: HWnd - handle of window with caret
Returns: if the function succeeds
Makes the caret visible on the screen at the caret's current position.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ShowCaret(hWnd: HWND): Boolean;
begin
Result := Boolean(Windows.ShowCaret(HWnd));
end;
{------------------------------------------------------------------------------
Method: ShowScrollBar
Params: Handle - handle of window with scroll bar
WBar - scroll bar flag
BShow - is the scroll bar visible?
Returns: if the function succeeds
Shows or hides the specified scroll bar.
------------------------------------------------------------------------------}
{function TWinCEWidgetSet.ShowScrollBar(Handle: HWND; wBar: Integer;
bShow: Boolean): Boolean;
begin
Result:=inherited ShowScrollBar(Handle, wBar, bShow);
end;}
{------------------------------------------------------------------------------
Method: ShowWindow
Params: hWnd - Window handle
nCmdShow - (SW_SHOWNORMAL, SW_MINIMIZE, SW_SHOWMAXIMIZED)
Returns: if the function succeeds
------------------------------------------------------------------------------}
function TWinCEWidgetSet.ShowWindow(hWnd: HWND; nCmdShow: Integer): Boolean;
begin
Result := Boolean(Windows.ShowWindow(hWnd, nCmdShow));
end;
{------------------------------------------------------------------------------
Method: StretchBlt
Params: DestDC - The destination device context
X, Y - The left/top corner of the destination rectangle
Width, Height - The size of the destination rectangle
SrcDC - The source device context
XSrc, YSrc - The left/top corner of the source rectangle
SrcWidth, SrcHeight - The size of the source rectangle
Rop - The raster operation to be performed
Returns: True if succesful
The StretchBlt function copies a bitmap from a source rectangle into a
destination rectangle using the specified raster operation. if needed it
resizes the bitmap to fit the dimensions of the destination rectangle.
Sizing is done according to the stretching mode currently set in the
destination device context.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.StretchBlt(DestDC: HDC; X, Y, Width, Height: Integer; SrcDC: HDC; XSrc, YSrc, SrcWidth, SrcHeight: Integer; Rop: Cardinal): Boolean;
begin
Assert(True, Format('Trace:> [TWinCEWidgetSet.StretchBlt] DestDC:0x%x; X:%d, Y:%d, Width:%d, Height:%d; SrcDC:0x%x; XSrc:%d, YSrc:%d, SrcWidth:%d, SrcHeight:%d; Rop:0x%x', [DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SrcWidth, SrcHeight, Rop]));
Result := Boolean(Windows.StretchBlt(DestDc, X, Y, Width, Height, SrcDC, XSrc, YSrc, SrcWidth, SrcHeight, Rop));
// Assert(True, Format('Trace:< [TWinCEWidgetSet.StretchBlt] DestDC:0x%x --> %s', [DestDC, BOOL_TEXT[Result]]));
end;
{------------------------------------------------------------------------------
Method: StretchMaskBlt
Params: DestDC: The destination devicecontext
X, Y: The left/top corner of the destination rectangle
Width, Height: The size of the destination rectangle
SrcDC: The source devicecontext
XSrc, YSrc: The left/top corner of the source rectangle
SrcWidth, SrcHeight: The size of the source rectangle
Mask: The handle of a monochrome bitmap
XMask, YMask: The left/top corner of the mask rectangle
Rop: The raster operation to be performed
Returns: True if succesful
The StretchMaskBlt function copies a bitmap from a source rectangle into a
destination rectangle using the specified mask and raster operations. if
needed it resizes the bitmap to fit the dimensions of the destination
rectangle. Sizing is done according to the stretching mode currently set in
the destination device context.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.StretchMaskBlt(DestDC: HDC; X, Y, Width, Height: Integer; SrcDC: HDC; XSrc, YSrc, SrcWidth, SrcHeight: Integer; Mask: HBITMAP; XMask, YMask: Integer; Rop: DWORD): Boolean;
function CreatePremultipliedBitmap(AWinBmp: Windows.TBitmap; ABitmap: HBITMAP): HBITMAP;
var
SrcData: Pointer;
SrcPixel: PRGBAQuad absolute SrcData;
DstData: Pointer;
DstPixel: PRGBAQuad absolute DstData;
ByteCount: PtrUInt;
Info: record
Header: Windows.TBitmapInfoHeader;
Colors: array[0..3] of Cardinal; // reserve extra color for colormasks
end;
begin
Result := 0;
if not GetBitmapBytes(ABitmap, Rect(XSrc, YSrc, SrcWidth, SrcHeight), rileDWordBoundary, SrcData, ByteCount)
then begin
Exit;
end;
FillChar(Info.Header, SizeOf(Info.Header), 0);
Info.Header.biSize := SizeOf(Info.Header);
Info.Header.biWidth := SrcWidth;
Info.Header.biHeight := -SrcHeight;
Info.Header.biPlanes := 1;
Info.Header.biBitCount := 32;
Info.Header.biSizeImage := (SrcWidth * SrcHeight) shl 2;
// CE only supports bitfields
Info.Header.biCompression := BI_BITFIELDS;
Info.Colors[0] := $FF0000; {le-red}
Info.Colors[1] := $00FF00; {le-green}
Info.Colors[2] := $0000FF; {le-blue}
Result := Windows.CreateDIBSection(SrcDC, Windows.PBitmapInfo(@Info)^, DIB_RGB_COLORS, DstData, 0, 0);
if (Result = 0) or (DstData = nil)
then Exit;
ByteCount := ByteCount shr 2;
while ByteCount > 0 do
begin
DstPixel^.Red := (SrcPixel^.Red * SrcPixel^.Alpha) div 255;
DstPixel^.Green := (SrcPixel^.Green * SrcPixel^.Alpha) div 255;
DstPixel^.Blue := (SrcPixel^.Blue * SrcPixel^.Alpha) div 255;
DstPixel^.Alpha := SrcPixel^.Alpha;
Inc(SrcPixel);
Inc(DstPixel);
Dec(ByteCount);
end;
end;
var
MaskDC, CopyDC, AlphaDC: HDC;
MaskObj, CopyObj, AlphaObj: HGDIOBJ;
PrevTextColor, PrevBkColor: COLORREF;
WinBmp: Windows.TBitmap;
Bmp, CopyBmp, AlphaBmp: HBITMAP;
HasAlpha: Boolean;
Blend: TBlendFunction;
begin
//DbgDumpBitmap(Mask, 'StretchMaskBlt - Mask');
// check if the Src has an alpha channel
bmp := Windows.GetCurrentObject(SrcDC, OBJ_BITMAP);
// get info
HasAlpha := (Windows.GetObject(bmp, SizeOf(WinBmp), @WinBmp) <> 0)
and (WinBmp.bmBitsPixel = 32);
if HasAlpha
then begin
// premultiply pixels
AlphaBmp := CreatePremultipliedBitmap(WinBmp, Bmp);
AlphaDC := Windows.CreateCompatibleDC(SrcDC);
AlphaObj := Windows.SelectObject(AlphaDC, AlphaBmp);
// init blendfunction
Blend.BlendOp := AC_SRC_OVER;
Blend.BlendFlags := 0;
Blend.SourceConstantAlpha := 255;
Blend.AlphaFormat := AC_SRC_ALPHA;
end;
//Windows.SetStretchBltMode(DestDC, STRETCH_HALFTONE);
Windows.SetBrushOrgEx(DestDC, 0, 0, nil);
if Mask = 0 then
begin
if HasAlpha
then begin
Result := WinCEExtra.AlphaBlend(DestDC, X, Y, Width, Height, AlphaDC, 0, 0, SrcWidth, SrcHeight, Blend);
end
else begin
if (Width = SrcWidth) and (Height = SrcHeight) then
begin
Result := Windows.BitBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SRCCOPY);
end
else begin
Result := Windows.StretchBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SrcWidth, SrcHeight, SRCCOPY);
end;
end;
end
else begin
MaskDC := Windows.CreateCompatibleDC(DestDC);
MaskObj := Windows.SelectObject(MaskDC, Mask);
PrevTextColor := Windows.SetTextColor(DestDC, $00000000);
PrevBkColor := Windows.SetBkColor(DestDC, $00FFFFFF);
if HasAlpha
then begin
// create copy of masked destination
CopyDC := Windows.CreateCompatibleDC(DestDC);
CopyBmp := Windows.CreateCompatibleBitmap(DestDC, Width, Height);
CopyObj := Windows.SelectObject(CopyDC, CopyBmp);
Windows.BitBlt(CopyDC, 0, 0, Width, Height, DestDC, X, Y, SRCCOPY);
// wipe non masked area -> white
Windows.SetTextColor(CopyDC, $00FFFFFF);
Windows.SetBkColor(CopyDC, $00000000);
if (Width = SrcWidth) and (Height = SrcHeight)
then Windows.BitBlt(CopyDC, 0, 0, Width, Height, MaskDC, XSrc, YSrc, SRCPAINT)
else Windows.StretchBlt(CopyDC, 0, 0, Width, Height, MaskDC, XSrc, YSrc, SrcWidth, SrcHeight, SRCPAINT);
// copy source
WinCEExtra.AlphaBlend(DestDC, X, Y, Width, Height, AlphaDC, 0, 0, SrcWidth, SrcHeight, Blend);
// wipe masked area -> white
if (Width = SrcWidth) and (Height = SrcHeight)
then Windows.BitBlt(DestDC, X, Y, Width, Height, MaskDC, XSrc, YSrc, SRCPAINT)
else Windows.StretchBlt(DestDC, X, Y, Width, Height, MaskDC, XSrc, YSrc, SrcWidth, SrcHeight, SRCPAINT);
// paint copied destination
Windows.BitBlt(DestDC, X, Y, Width, Height, CopyDC, 0, 0, SRCAND);
// Restore stuff
Windows.SelectObject(CopyDC, CopyObj);
Windows.DeleteObject(CopyBmp);
Windows.DeleteDC(CopyDC);
end
else begin
if (Width = SrcWidth) and (Height = SrcHeight) then
begin
Windows.BitBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SRCINVERT);
Windows.BitBlt(DestDC, X, Y, Width, Height, MaskDC, XSrc, YSrc, SRCAND);
Windows.BitBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SRCINVERT);
end
else begin
Windows.StretchBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SrcWidth, SrcHeight, SRCINVERT);
Windows.StretchBlt(DestDC, X, Y, Width, Height, MaskDC, XSrc, YSrc, SrcWidth, SrcHeight, SRCAND);
Windows.StretchBlt(DestDC, X, Y, Width, Height, SrcDC, XSrc, YSrc, SrcWidth, SrcHeight, SRCINVERT);
end;
end;
Windows.SetTextColor(DestDC, PrevTextColor);
Windows.SetBkColor(DestDC, PrevBkColor);
Windows.SelectObject(MaskDC, MaskObj);
Windows.DeleteDC(MaskDC);
end;
if HasAlpha
then begin
Windows.SelectObject(AlphaDC, AlphaObj);
Windows.DeleteObject(AlphaBmp);
Windows.DeleteDC(AlphaDC);
end;
Result := true;
end;
{------------------------------------------------------------------------------
Method: TextOut
Params: DC - handle of device context
X - x-coordinate of starting position
Y - y-coordinate of starting position
Str - string
Count - number of characters in string
Returns: if the function succeeds
Writes a character string at the specified location, using the currently
selected font.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.TextOut(DC: HDC; X, Y: Integer; Str: PChar; Count: Integer): Boolean;
begin
Result := false;
// Result := Boolean(Windows.ExtTextOut(DC, X, Y, Str, Count));
// Result := Boolean(Windows.TextOut(DC, X, Y, Str, Count));
end;
{------------------------------------------------------------------------------
Method: WindowFromPoint
Params: Point: Specifies the x and y Coords
Returns: The handle of the window.
Retrieves the handle of the window that contains the specified point.
------------------------------------------------------------------------------}
function TWinCEWidgetSet.WindowFromPoint(Point: TPoint): HWND;
var
ProcessID: DWORD;
begin
Result := Windows.WindowFromPoint(Windows.POINT(Point));
// check if window created by this process
Windows.GetWindowThreadProcessId(Result, @ProcessID);
if ProcessID <> Windows.GetCurrentProcessID then
Result := 0;
end;
procedure TWinCEWidgetSet.DeleteCriticalSection(var CritSection: TCriticalSection);
begin
{ An OS Compatible TCriticalSection needs to be defined}
if CritSection<>0 then
begin
Windows.DeleteCriticalSection(LPCRITICAL_SECTION(CritSection));
try
Dispose(LPCRITICAL_SECTION(CritSection));
finally
CritSection := 0;
end;
end;
end;
procedure TWinCEWidgetSet.EnterCriticalSection(var CritSection: TCriticalSection);
begin
{ An OS Compatible TCriticalSection needs to be defined}
Windows.LeaveCriticalSection(LPCRITICAL_SECTION(CritSection));
end;
{We interprete CritSection as a pointer to a LPCRITICAL_SECTION structure}
procedure TWinCEWidgetSet.InitializeCriticalSection(var CritSection: TCriticalSection);
var
Crit : LPCRITICAL_SECTION;
begin
{ An OS Compatible TCriticalSection needs to be defined}
if CritSection <> 0 then
DeleteCriticalSection(CritSection);
New(Crit);
Windows.InitializeCriticalSection(Crit);
CritSection := TCriticalSection(Crit);
end;
procedure TWinCEWidgetSet.LeaveCriticalSection(var CritSection: TCriticalSection);
begin
{ An OS Compatible TCriticalSection needs to be defined}
Windows.LeaveCriticalSection(LPCRITICAL_SECTION(CritSection));
end;
//##apiwiz##epi## // do not remove
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