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https://gitlab.com/freepascal.org/lazarus/lazarus.git
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1167 lines
61 KiB
ObjectPascal
1167 lines
61 KiB
ObjectPascal
{ $Id$ }
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{
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*****************************************************************************
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* LCLMessageGlue.pas *
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* ------------------ *
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* *
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* *
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*****************************************************************************
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*****************************************************************************
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This file is part of the Lazarus Component Library (LCL)
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See the file COPYING.modifiedLGPL.txt, included in this distribution,
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for details about the license.
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*****************************************************************************
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Abstract:
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A Unit to make the passing of messages to the LCL from the different
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widgetsets easier. Your mileage will vary if you try to use these procs
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from within your program.
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}
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unit LCLMessageGlue;
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{$MODE objfpc}{$H+}
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interface
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uses
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Classes, Forms, LCLClasses, LCLProc, Controls, Messages, LMessages, LCLType;
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function DeliverMessage(const Target: TObject; var AMessage): PtrInt;
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function SendSimpleMessage(const Target: TControl; Msg: Cardinal): PtrInt;
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function LCLSendActivateMsg(const Target: TControl; Active: Word; Minimized: Boolean; ActiveWindow: HWND = 0): PtrInt;
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function LCLSendSetFocusMsg(const Target: TControl): PtrInt;
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function LCLSendKillFocusMsg(const Target: TControl): PtrInt;
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function LCLSendShowWindowMsg(const Target: TControl; Show: Boolean; Status: LPARAM = 0): PtrInt;
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function LCLSendSizeMsg(const Target: TControl; Width, Height: Word; SizeType: Longint; FromInterface: Boolean = True): PtrInt;
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function LCLSendMoveMsg(const Target: TControl; XPos, YPos: SmallInt; MoveType: PtrInt = Move_Default; FromInterface: Boolean = True): PtrInt;
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function LCLSendMouseMoveMsg(const Target: TControl; XPos, YPos: SmallInt; ShiftState: TShiftState = []): PtrInt;
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function LCLSendMouseDownMsg(const Target: TControl; XPos, YPos: SmallInt; Button: TMouseButton; ShiftState: TShiftState = []): PtrInt;
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function LCLSendMouseUpMsg(const Target: TControl; XPos, YPos: SmallInt; Button: TMouseButton; ShiftState: TShiftState = []): PtrInt;
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function LCLSendMouseWheelMsg(const Target: TControl; XPos, YPos, WheelDelta: SmallInt; ShiftState: TShiftState = []): PtrInt;
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function LCLSendCaptureChangedMsg(const Target: TControl): PtrInt;
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function LCLSendSelectionChangedMsg(const Target: TControl): PtrInt;
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function LCLSendDestroyMsg(const Target: TControl): PtrInt;
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function LCLSendChangedMsg(const Target: TControl; ItemIndex: WPARAM = 0): PtrInt;
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function LCLSendClickedMsg(const Target: TControl): PtrInt;
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function LCLSendMouseEnterMsg(const Target: TControl): PtrInt;
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function LCLSendMouseLeaveMsg(const Target: TControl): PtrInt;
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function LCLSendSetEditableMsg(const Target: TControl): PtrInt;
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function LCLSendMoveWordMsg(const Target: TControl): PtrInt;
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function LCLSendMovePageMsg(const Target: TControl): PtrInt;
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function LCLSendMoveToRowMsg(const Target: TControl): PtrInt;
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function LCLSendMoveToColumnMsg(const Target: TControl): PtrInt;
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function LCLSendKillCharMsg(const Target: TControl): PtrInt;
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function LCLSendKillWordMsg(const Target: TControl): PtrInt;
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function LCLSendKillLineMsg(const Target: TControl): PtrInt;
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function LCLSendCutToClipboardMsg(const Target: TControl): PtrInt;
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function LCLSendCopyToClipboardMsg(const Target: TControl): PtrInt;
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function LCLSendPasteFromClipboardMsg(const Target: TControl): PtrInt;
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function LCLSendConfigureEventMsg(const Target: TControl): PtrInt;
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function LCLSendPaintMsg(const Target: TControl;const DC: HDC; const PaintStruct: PPaintStruct): PtrInt;
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function LCLSendEraseBackgroundMsg(const Target: TWinControl;const DC: HDC): PtrInt;
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function LCLSendKeyDownEvent(const Target: TControl; var CharCode: Word; KeyData: PtrInt; BeforeEvent, IsSysKey: Boolean): PtrInt;
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function LCLSendKeyUpEvent(const Target: TControl; var CharCode: Word; KeyData: PtrInt; BeforeEvent, IsSysKey: Boolean): PtrInt;
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function LCLSendCharEvent(const Target: TControl; var CharCode: Word; KeyData: PtrInt; BeforeEvent, IsSysKey, ANotifyUserInput: Boolean): PtrInt;
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function LCLSendUTF8KeyPress(const Target: TWinControl; AUTF8Char: TUTF8Char; IsSysKey: Boolean): PtrInt;
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function LCLSendTimerMsg(const Target: TControl; TimerID: WParam; TimerProc: LParam): PtrInt;
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function LCLSendExitMsg(const Target: TControl): PtrInt;
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function LCLSendCloseQueryMsg(const Target: TControl): PtrInt;
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function LCLSendDragStartMsg(const Target: TControl): PtrInt;
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function LCLSendMonthChangedMsg(const Target: TControl): PtrInt;
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function LCLSendYearChangedMsg(const Target: TControl): PtrInt;
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function LCLSendDayChangedMsg(const Target: TControl): PtrInt;
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function LCLSendMouseMultiClickMsg(const Target: TControl; XPos, YPos: SmallInt; Button: TMouseButton; ClickCount: Byte = 2; ShiftState: TShiftState = []): PtrInt;
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function LCLSendDrawListItemMsg(const Target: TControl; const DrawListItemStruct: PDrawListItemStruct): PtrInt;
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function LCLSendDropDownMsg(const Target: TControl): PtrInt;
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function LCLSendCloseUpMsg(const Target: TControl): PtrInt;
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implementation
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type
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TWinControlAccess = class(TWinControl)
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end;
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function DeliverMessage(const Target: TObject; var AMessage): PtrInt;
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var
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RefCounted: Boolean;
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begin
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if Target=nil then DebugLn('[DeliverMessage] Target = nil');
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{$IFDEF VerboseDeliverMessage}
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if (TLMessage(AMessage).Msg <>LM_MOUSEMOVE)
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and (TLMessage(AMessage).Msg <>LM_PAINT)
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and (TLMessage(AMessage).Msg <>LM_KEYDOWN)
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and (TLMessage(AMessage).Msg <>LM_KEYUP)
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and (TLMessage(AMessage).Msg < CN_KEYDOWN ) then
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DebugLn('DeliverMessage ',DbgS(Target),
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' ',TComponent(Target).Name,':',TObject(Target).ClassName,
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' Message=',GetMessageName(TLMessage(AMessage).Msg));
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{$ENDIF}
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RefCounted := False;
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try
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try
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if Target is TLCLComponent then
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begin
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TLCLComponent(Target).IncLCLRefCount;
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RefCounted := True;
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end;
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if Target is TControl then
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TControl(Target).WindowProc(TLMessage(AMessage))
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else
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Target.Dispatch(TLMessage(AMessage));
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except
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Application.HandleException(nil);
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end;
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finally
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if RefCounted then
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TLCLComponent(Target).DecLCLRefCount;
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end;
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Result := TLMessage(AMessage).Result;
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end;
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{******************************************************************************
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* *
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* SendSimpleMessage *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the simple message *
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* Msg : Message type constant *
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* *
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******************************************************************************}
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function SendSimpleMessage(const Target: TControl; Msg: Cardinal): PtrInt;
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var
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Mess : TLMessage;
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begin
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FillChar(Mess,SizeOf(Mess),0);
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Mess.Msg := Msg;
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendActivateMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_ACTIVATE *
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* Active : Set to True. This is currently ignored *
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* Minimized : Set to False. This is currently ignored *
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* ActiveWindow: Optional. Pass the handle of the currently or newly *
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* active window *
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* *
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******************************************************************************}
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function LCLSendActivateMsg(const Target: TControl; Active: Word; Minimized: Boolean; ActiveWindow: HWND = 0): PtrInt;
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var
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Mess: TLMActivate;
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begin
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Result := 0;
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FillChar(Mess, SizeOf(Mess), 0);
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Mess.Msg := LM_ACTIVATE;
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Mess.Active := Active;
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Mess.Minimized := Minimized;
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Mess.ActiveWindow := ActiveWindow;
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendSetFocusMessage *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_SETFOCUS *
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* *
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******************************************************************************}
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function LCLSendSetFocusMsg(const Target: TControl): PtrInt;
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begin
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Result:=SendSimpleMessage(Target, LM_SETFOCUS);
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end;
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{******************************************************************************
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* *
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* LCLSendKillFocusMessage *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_KILLFOCUS *
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* *
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******************************************************************************}
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function LCLSendKillFocusMsg(const Target: TControl): PtrInt;
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begin
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Result:=SendSimpleMessage(Target, LM_KILLFOCUS);
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end;
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{******************************************************************************
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* *
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* LCLSendShowWindowMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_SHOWWINDOW *
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* Show : Set to True if Showing the window False otherwise *
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* Status : Usually zero. Set to non-zero if the message was generated *
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* by another window showing or hiding. *
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* *
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******************************************************************************}
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function LCLSendShowWindowMsg(const Target: TControl; Show: Boolean;
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Status: LPARAM = 0): PtrInt;
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var
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Mess : TLMShowWindow;
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begin
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FillChar(Mess,SizeOf(Mess),0);
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Mess.Msg := LM_SHOWWINDOW;
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Mess.Show := True;
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendSizeMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_SIZE *
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* Width, Height : The new Width and Height for the control *
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* SizeType : SIZE_RESTORED, SIZE_MINIMIZED, SIZE_MAXIMIZED,... *
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* FromInterface : True if this message was sent from the widgetset to notify *
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* the LCL of a change. False to make the widgetset change *
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* the size of the control. Default = True *
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* *
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******************************************************************************}
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function LCLSendSizeMsg(const Target: TControl; Width, Height: Word;
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SizeType: Longint; FromInterface: Boolean = True): PtrInt;
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var
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Mess: TLMSize;
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begin
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FillChar(Mess, SizeOf(Mess), 0);
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Mess.Msg := LM_SIZE;
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Mess.Width := Width;
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Mess.Height := Height;
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Mess.SizeType := SizeType;
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if FromInterface then
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Mess.SizeType := Mess.SizeType or Size_SourceIsInterface;
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendMoveMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_MOVE *
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* XPos, YPos : The new Top and Left for the control *
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* MoveType : Move_Default = update, 1 = force RequestAlign *
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* FromInterface : True if this message was sent from the widgetset to notify *
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* the LCL of a change. False to make the widgetset change *
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* the position of the control. Default = True *
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* *
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******************************************************************************}
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function LCLSendMoveMsg(const Target: TControl; XPos, YPos: SmallInt;
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MoveType: PtrInt = Move_Default; FromInterface: Boolean = True): PtrInt;
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var
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Mess: TLMMove;
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begin
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FillChar(Mess, SizeOf(Mess), 0);
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Mess.Msg := LM_MOVE;
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Mess.XPos := XPos;
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Mess.YPos := YPos;
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Mess.MoveType := MoveType;
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if FromInterface then
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Mess.MoveType := Mess.MoveType or Move_SourceIsInterface;
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendMouseMoveMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_SIZE *
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* XPos, YPos : The Mouses X and Y position relative to the control. *
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* ShiftState : Modifier keys that are pressed at the time of the event *
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* *
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******************************************************************************}
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function LCLSendMouseMoveMsg(const Target: TControl; XPos, YPos: SmallInt;
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ShiftState: TShiftState = []): PtrInt;
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var
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Mess: TLMMouseMove;
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begin
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FillChar(Mess, SizeOf(Mess), 0);
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Mess.Msg := LM_MouseMove;
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Mess.XPos := XPos;
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Mess.YPos := YPos;
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Mess.Keys := ShiftStateToKeys(ShiftState);
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendMouseDownMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_xBUTTONDOWN *
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* XPos, YPos : The Mouses X and Y position relative to the control. *
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* Button : TMouseButton (mbLeft, mbMiddle, mbRight) *
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* ShiftState : Modifier keys that are pressed at the time of the event *
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* *
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******************************************************************************}
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function LCLSendMouseDownMsg(const Target: TControl; XPos, YPos: SmallInt;
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Button: TMouseButton; ShiftState: TShiftState = []): PtrInt;
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var
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Mess: TLMMouse;
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begin
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FillChar(Mess, SizeOf(Mess), 0);
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case Button of
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mbLeft : Mess.Msg := LM_LBUTTONDOWN;
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mbMiddle : Mess.Msg := LM_MBUTTONDOWN;
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mbRight : Mess.Msg := LM_RBUTTONDOWN;
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mbExtra1 : Mess.Msg := LM_XBUTTONDOWN;
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mbExtra2 : Mess.Msg := LM_XBUTTONDOWN;
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end;
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Mess.XPos := XPos;
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Mess.YPos := YPos;
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Mess.Keys := ShiftStateToKeys(ShiftState);
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendMouseUpMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_xBUTTONUP *
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* XPos, YPos : The Mouses X and Y position relative to the control. *
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* Button : TMouseButton (mbLeft, mbMiddle, mbRight) *
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* ShiftState : Modifier keys that are pressed at the time of the event *
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* *
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******************************************************************************}
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function LCLSendMouseUpMsg(const Target: TControl; XPos, YPos: SmallInt;
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Button: TMouseButton; ShiftState: TShiftState): PtrInt;
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var
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Mess: TLMMouse;
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begin
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FillChar(Mess, SizeOf(Mess), 0);
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case Button of
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mbLeft : Mess.Msg := LM_LBUTTONUP;
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mbMiddle : Mess.Msg := LM_MBUTTONUP;
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mbRight : Mess.Msg := LM_RBUTTONUP;
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mbExtra1 : Mess.Msg := LM_XBUTTONUP;
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mbExtra2 : Mess.Msg := LM_XBUTTONUP;
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end;
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Mess.XPos := XPos;
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Mess.YPos := YPos;
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Mess.Keys := ShiftStateToKeys(ShiftState);
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendMouseWheelMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_xBUTTONUP *
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* XPos, YPos : The Mouses X and Y position relative to the control. *
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* WheelDelta : -1 for Up, 1 for Down *
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* ShiftState : Modifier keys that are pressed at the time of the event *
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* *
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******************************************************************************}
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function LCLSendMouseWheelMsg(const Target: TControl; XPos, YPos,
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WheelDelta: SmallInt; ShiftState: TShiftState): PtrInt;
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var
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Mess: TLMMouseEvent;
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begin
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FillChar(Mess, SizeOf(Mess), 0);
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Mess.Msg := LM_MOUSEWHEEL;
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Mess.X := XPos;
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Mess.Y := YPos;
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Mess.WheelDelta := WheelDelta;
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Mess.State := ShiftState;
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Result := DeliverMessage(Target, Mess);
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end;
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{******************************************************************************
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* *
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* LCLSendCaptureChangedMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_CAPTURECHANGED *
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* *
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******************************************************************************}
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function LCLSendCaptureChangedMsg(const Target: TControl): PtrInt;
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begin
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Result := SendSimpleMessage(Target, LM_CAPTURECHANGED);
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end;
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{******************************************************************************
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* *
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* LCLSendSelectionChangedMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_SELCHANGE *
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* *
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******************************************************************************}
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function LCLSendSelectionChangedMsg(const Target: TControl): PtrInt;
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begin
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Result := SendSimpleMessage(Target, LM_SELCHANGE);
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end;
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|
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{******************************************************************************
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* *
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* LCLSendSelectionChangedMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_DESTROY *
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* *
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******************************************************************************}
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function LCLSendDestroyMsg(const Target: TControl): PtrInt;
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begin
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Result := SendSimpleMessage(Target, LM_DESTROY);
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end;
|
|
|
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{******************************************************************************
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|
* *
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* LCLSendChangedMsg *
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* *
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* Returns : 0 to accept the message, non-zero to reject the message *
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* *
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* Params *
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* *
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* Target : The Control that will recieve the message LM_CHANGED *
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|
* ItemIndex : Only used by Listviews and CheckBoxes. The Index of *
|
|
* the Item that has changed. *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendChangedMsg(const Target: TControl; ItemIndex: WPARAM = 0): PtrInt;
|
|
var
|
|
Mess: TLMessage;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := LM_CHANGED;
|
|
Mess.WParam := ItemIndex;
|
|
Result := DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendClickedMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_CLICKED *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendClickedMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_CLICKED);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMouseEnterMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message CM_MOUSEENTER *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMouseEnterMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, CM_MOUSEENTER);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMouseLeaveMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message CM_MOUSELEAVE *
|
|
* *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMouseLeaveMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, CM_MOUSELEAVE);
|
|
end;
|
|
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendSetEditableMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_SETEDITABLE *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendSetEditableMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_SETEDITABLE);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMoveWordMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_MOVEWORD *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMoveWordMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_MOVEWORD);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMovePageMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_MOVEPAGE *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMovePageMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_MOVEPAGE);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMoveToRowMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_MOVETOROW *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMoveToRowMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_MOVETOROW);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMoveToColumnMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_MOVETOCOLUMN *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMoveToColumnMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_MOVETOCOLUMN);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendKillCharMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_KILLCHAR *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendKillCharMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_KILLCHAR);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendKillWordMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_KILLWORD *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendKillWordMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_KILLWORD);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendKillLineMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_KILLLINE *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendKillLineMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_KILLLINE);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendCutToClipboardMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_CUT *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendCutToClipboardMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_CUT);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendCopyToClipboardMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_COPY *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendCopyToClipboardMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_COPY);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendPasteFromClipboardMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_COPY *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendPasteFromClipboardMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_PASTE);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendConfigureEventMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_CONFIGUREEVENT *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendConfigureEventMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_CONFIGUREEVENT);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendPaintMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_PAINT *
|
|
* DC : This is the Device Context *
|
|
* PaintStruct : PaintStruct *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendPaintMsg(const Target: TControl;const DC: HDC; const PaintStruct: PPaintStruct): PtrInt;
|
|
var
|
|
Mess: TLMPaint;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := LM_PAINT;
|
|
Mess.DC := DC;
|
|
Mess.PaintStruct := PaintStruct;
|
|
|
|
Result := DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
function LCLSendEraseBackgroundMsg(const Target: TWinControl; const DC: HDC): PtrInt;
|
|
var
|
|
Mess: TLMEraseBkgnd;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := LM_ERASEBKGND;
|
|
Mess.DC := DC;
|
|
|
|
Include(TWinControlAccess(Target).FWinControlFlags, wcfEraseBackground);
|
|
Result := DeliverMessage(Target, Mess);
|
|
Exclude(TWinControlAccess(Target).FWinControlFlags, wcfEraseBackground);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendKeyDownEvent *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message xx_xxKEYDOWN *
|
|
* CharCode : This is the VK Key code. Check if this has changed after *
|
|
* sending the message. *
|
|
* KeyData : Bitwise or'ed combination of the KF_xxxx constants. *
|
|
* BeforeEvent : True if we are sending the message before the widgetset *
|
|
* has handled the keystroke. False otherwise *
|
|
* IsSysKey : True if the Alt Key was also pressed. *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendKeyDownEvent(const Target: TControl; var CharCode: Word;
|
|
KeyData: PtrInt; BeforeEvent, IsSysKey: Boolean): PtrInt;
|
|
var
|
|
Mess: TLMKeyDown;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
if BeforeEvent then begin
|
|
if IsSysKey then
|
|
Mess.Msg := CN_SYSKEYDOWN
|
|
else Mess.Msg := CN_KEYDOWN;
|
|
end
|
|
else begin
|
|
if IsSysKey then
|
|
Mess.Msg := LM_SYSKEYDOWN
|
|
else Mess.Msg := LM_KEYDOWN;
|
|
end;
|
|
Mess.CharCode := CharCode;
|
|
Mess.KeyData := KeyData;
|
|
Result := DeliverMessage(Target, Mess);
|
|
CharCode := Mess.CharCode;
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendKeyUpEvent *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message xx_xxKEYUP *
|
|
* CharCode : This is the VK Key code. Check if this has changed after *
|
|
* sending the message. *
|
|
* KeyData : Bitwise or'ed combination of the KF_xxxx constants. *
|
|
* BeforeEvent : True if we are sending the message before the widgetset *
|
|
* has handled the keystroke. False otherwise. *
|
|
* IsSysKey : True if the Alt Key was also pressed. *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendKeyUpEvent(const Target: TControl; var CharCode: Word;
|
|
KeyData: PtrInt; BeforeEvent, IsSysKey: Boolean): PtrInt;
|
|
var
|
|
Mess: TLMKeyUp;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
if BeforeEvent then begin
|
|
if IsSysKey then
|
|
Mess.Msg := CN_SYSKEYUP
|
|
else Mess.Msg := CN_KEYUP;
|
|
end
|
|
else begin
|
|
if IsSysKey then
|
|
Mess.Msg := LM_SYSKEYUP
|
|
else Mess.Msg := LM_KEYUP;
|
|
end;
|
|
Mess.CharCode := CharCode;
|
|
Mess.KeyData := KeyData;
|
|
Result := DeliverMessage(Target, Mess);
|
|
CharCode := Mess.CharCode;
|
|
end;
|
|
|
|
function LCLSendCharEvent(const Target: TControl; var CharCode: Word;
|
|
KeyData: PtrInt; BeforeEvent, IsSysKey, ANotifyUserInput: Boolean): PtrInt;
|
|
var
|
|
Mess: TLMChar;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
if BeforeEvent then begin
|
|
if IsSysKey then
|
|
Mess.Msg := CN_SYSCHAR
|
|
else Mess.Msg := CN_CHAR;
|
|
end
|
|
else begin
|
|
if IsSysKey then
|
|
Mess.Msg := LM_SYSCHAR
|
|
else Mess.Msg := LM_CHAR;
|
|
end;
|
|
Mess.CharCode := CharCode;
|
|
Mess.KeyData := KeyData;
|
|
Result := DeliverMessage(Target, Mess);
|
|
CharCode := Mess.CharCode;
|
|
|
|
if ANotifyUserInput then NotifyApplicationUserInput(Target, Mess.Msg);
|
|
end;
|
|
|
|
function LCLSendUTF8KeyPress(const Target: TWinControl; AUTF8Char: TUTF8Char;
|
|
IsSysKey: Boolean): PtrInt;
|
|
begin
|
|
{if not IsControlKey then}
|
|
Target.IntfUTF8KeyPress(AUTF8Char, 1, IsSysKey);
|
|
Result := 1;
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendTimerMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to allow the message to *
|
|
* continue to process. *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_TIMER *
|
|
* TimerID : ID of the timer. *
|
|
* TimerProc : The procedure to call. *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendTimerMsg(const Target: TControl; TimerID: WParam;
|
|
TimerProc: LParam): PtrInt;
|
|
var
|
|
Mess: TLMessage;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := LM_TIMER;
|
|
Mess.WParam := TimerID;
|
|
Mess.LParam := TimerProc;
|
|
Result:=DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendExitMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_EXIT *
|
|
* *
|
|
* Not used by the LCL *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendExitMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_EXIT);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendCloseQueryMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_CLOSEQUERY *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendCloseQueryMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_CLOSEQUERY);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendDragStartMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_DRAGSTART *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendDragStartMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_DRAGSTART);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMonthChangedMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_MONTHCHANGED *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMonthChangedMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_MONTHCHANGED);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendYearChangedMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_YEARCHANGED *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendYearChangedMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_YEARCHANGED);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendDayChangedMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_DAYCHANGED *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendDayChangedMsg(const Target: TControl): PtrInt;
|
|
begin
|
|
Result := SendSimpleMessage(Target, LM_DAYCHANGED);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendMouseMultiClickMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_xBUTTONxxxCLK *
|
|
* XPos, YPos : The Mouses X and Y position relative to the control. *
|
|
* Button : TMouseButton (mbLeft, mbMiddle, mbRight) *
|
|
* ClickCount : 2 = LM_xBUTTONDBLCLK, 3 = LM_xBUTTONTRIPLECLK, *
|
|
* 4 = LM_xBUTTONQUADCLK *
|
|
* ShiftState : Modifier keys that are pressed at the time of the event *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendMouseMultiClickMsg(const Target: TControl; XPos, YPos: SmallInt;
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Button: TMouseButton; ClickCount: Byte = 2; ShiftState: TShiftState = []): PtrInt;
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var
|
|
Mess: TLMMouse;
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|
begin
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|
FillChar(Mess, SizeOf(Mess), 0);
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|
Mess.Msg := LM_UNKNOWN;
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|
case ClickCount of
|
|
2:
|
|
case Button of
|
|
mbLeft : Mess.Msg := LM_LBUTTONDBLCLK;
|
|
mbMiddle : Mess.Msg := LM_MBUTTONDBLCLK;
|
|
mbRight : Mess.Msg := LM_RBUTTONDBLCLK;
|
|
mbExtra1 : Mess.Msg := LM_XBUTTONDBLCLK;
|
|
mbExtra2 : Mess.Msg := LM_XBUTTONDBLCLK;
|
|
end;
|
|
3:
|
|
case Button of
|
|
mbLeft : Mess.Msg := LM_LBUTTONTRIPLECLK;
|
|
mbMiddle : Mess.Msg := LM_MBUTTONTRIPLECLK;
|
|
mbRight : Mess.Msg := LM_RBUTTONTRIPLECLK;
|
|
mbExtra1 : Mess.Msg := LM_XBUTTONTRIPLECLK;
|
|
mbExtra2 : Mess.Msg := LM_XBUTTONTRIPLECLK;
|
|
end;
|
|
4:
|
|
case Button of
|
|
mbLeft : Mess.Msg := LM_LBUTTONQUADCLK;
|
|
mbMiddle : Mess.Msg := LM_MBUTTONQUADCLK;
|
|
mbRight : Mess.Msg := LM_RBUTTONQUADCLK;
|
|
mbExtra1 : Mess.Msg := LM_XBUTTONQUADCLK;
|
|
mbExtra2 : Mess.Msg := LM_XBUTTONQUADCLK;
|
|
end;
|
|
end;
|
|
|
|
Mess.XPos := XPos;
|
|
Mess.YPos := YPos;
|
|
|
|
Mess.Keys := ShiftStateToKeys(ShiftState);
|
|
|
|
Result := DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendDrawListItemMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message LM_DRAWLISTITEM *
|
|
* DrawListItemStruct : Pointer to a TDrawListItemStruct *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendDrawListItemMsg(const Target: TControl; const DrawListItemStruct: PDrawListItemStruct): PtrInt;
|
|
var
|
|
Mess: TLMDrawListItem;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := LM_DRAWLISTITEM;
|
|
Mess.DrawListItemStruct := DrawListItemStruct;
|
|
|
|
Result := DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
{******************************************************************************
|
|
* *
|
|
* LCLSendDropDownMsg *
|
|
* *
|
|
* Returns : 0 to accept the message, non-zero to reject the message *
|
|
* *
|
|
* Params *
|
|
* *
|
|
* Target : The Control that will recieve the message CN_Command *
|
|
* *
|
|
* Used to notify a combo that the combobox is popping down *
|
|
* *
|
|
******************************************************************************}
|
|
function LCLSendDropDownMsg(const Target: TControl): PtrInt;
|
|
var
|
|
Mess : TLMCommand;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := CN_Command;
|
|
Mess.NotifyCode := CBN_DROPDOWN;
|
|
|
|
Result := DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
function LCLSendCloseUpMsg(const Target: TControl): PtrInt;
|
|
var
|
|
Mess : TLMCommand;
|
|
begin
|
|
FillChar(Mess, SizeOf(Mess), 0);
|
|
Mess.Msg := CN_Command;
|
|
Mess.NotifyCode := CBN_CLOSEUP;
|
|
|
|
Result := DeliverMessage(Target, Mess);
|
|
end;
|
|
|
|
|
|
// Remove these lines as you implement the function
|
|
|
|
{
|
|
LM_ACTIVATEITEM // NOT USED
|
|
LM_FOCUS // NOT USED
|
|
LM_SIZEALLOCATE // NOT USED
|
|
LM_CHECKRESIZE // NOT USED
|
|
LM_SHOW // NOT USED
|
|
LM_MOVERESIZE // NOT USED
|
|
LM_DRAW // NOT USED
|
|
LM_MOUSEBTNPRESS // NOT USED
|
|
LM_MOUSEBTNRELEASE // NOT USED
|
|
}
|
|
|
|
|
|
end.
|