win32:

- move ComboBoxWindowProc from win32callback.inc to Win32WSStdCtrls
- declare GetComboBoxInfo method in win32extra (this functions can be used to get listox and edit handles from combobox)

git-svn-id: trunk@12289 -

lcl/interfaces/win32/win32callback.inc

@@ -2478,35 +2478,6 @@ begin
   end;
 end;
 
-{------------------------------------------------------------------------------
- Function: ComboBoxWindowProc
- Params: Window - The window that receives a message
-         Msg    - The message received
-         WParam - Word parameter
-         LParam - Long-integer parameter
-  Returns: 0 if Msg is handled; non-zero long-integer result otherwise
-
-  Handles the messages sent to a combobox control by Windows or other
-  applications
- ------------------------------------------------------------------------------}
-function ComboBoxWindowProc(Window: HWnd; Msg: UInt; WParam: Windows.WParam;
-    LParam: Windows.LParam): LResult; stdcall;
-begin
-  // darn MS: if combobox has edit control, and combobox receives focus, it
-  // passes it on to the edit, so it will send a WM_KILLFOCUS; inhibit
-  // also don't pass WM_SETFOCUS to the lcl,
-  // it will get one from the edit control
-  if ((Msg = WM_KILLFOCUS) or (Msg = WM_SETFOCUS)) and
-     (Windows.GetTopWindow(Window) <> HWND(nil)) then
-  begin
-    // continue normal processing, don't send to lcl
-    Result := CallDefaultWindowProc(Window, Msg, WParam, LParam);
-  end else begin
-    // normal processing
-    Result := WindowProc(Window, Msg, WParam, LParam);
-  end;
-end;
-
 {------------------------------------------------------------------------------
  Procedure: TimerCallBackProc
  Params: window_hnd - handle of window for timer message, not set in this implementation

lcl/interfaces/win32/win32extra.pas

@@ -46,7 +46,7 @@ type
   end;
   PNMCustomDraw=^TNMCustomDraw;
 
-  TNMLVCustomDraw = Record
+  TNMLVCustomDraw = record
     hdr          : NMHDR;
     dwDrawStage  : DWORD;
     hdc          : HDC;
@@ -56,9 +56,21 @@ type
     lItemlParam  : longint;
     clrText,clrTextBk:COLORREF;
     iSubItem     :longint;
-                END;
+  end;
   PNMLVCustomDraw=^TNMLVCustomDraw;
 
+  tagCOMBOBOXINFO = record
+    cbSize: DWORD;
+    rcItem: TRect;
+    rcButton: TRect;
+    stateButton: DWORD;
+    hwndCombo: HWND;
+    hwndItem: HWND;
+    hwndList: HWND;
+  end;
+  TComboboxInfo = tagCOMBOBOXINFO;
+  PComboboxInfo = ^TComboboxInfo;
+
 { Win32 API constants not included in windows.pp }
 const
   { Recommended modal-dialog style }
@@ -248,6 +260,7 @@ const
 // load dynamic and use ownfunction if not defined
 var
   AlphaBlend: function(hdcDest: HDC; nXOriginDest, nYOriginDest, nWidthDest, nHeightDest: Integer; hdcSrc: HDC; nXOriginSrc, nYOriginSrc, nWidthSrc, nHeightSrc: Integer; blendFunction: TBlendFunction): BOOL; stdcall;
+  GetComboBoxInfo: function(hwndCombo: HWND; pcbi: PComboboxInfo): BOOL; stdcall;
 
 const
   // ComCtlVersions
@@ -405,15 +418,19 @@ end;
 
 const 
   msimg32lib = 'msimg32.dll';
+  user32lib = 'user32.dll';
  
 var
   msimg32handle: THandle = 0;
+  user32handle: THandle = 0;
 
 procedure Initialize;
 var
   p: Pointer;
 begin                
   AlphaBlend := @_AlphaBlend;
+  GetComboBoxInfo := nil;
+
   msimg32handle := LoadLibrary(msimg32lib);
   if msimg32handle <> 0
   then begin 
@@ -421,14 +438,28 @@ begin
     if p <> nil
     then Pointer(AlphaBlend) := p;
   end;
+  
+  user32handle := LoadLibrary(user32lib);
+  if user32handle <> 0 then
+  begin
+    p := GetProcAddress(user32handle, 'GetComboBoxInfo');
+    if p <> nil then
+      Pointer(GetComboboxInfo) := p;
+  end;
 end;
 
 procedure Finalize;
 begin
   AlphaBlend := @_AlphaBlend;
+  GetComboboxInfo := nil;
+
   if msimg32handle <> 0
   then FreeLibrary(msimg32handle);
   msimg32handle := 0;
+  
+  if user32handle <> 0 then
+    FreeLibrary(user32handle);
+  user32handle := 0;
 end;
 
 initialization
@@ -437,4 +468,4 @@ initialization
 finalization
   Finalize;
 
-End.
+end.

lcl/interfaces/win32/win32int.pp

@@ -248,8 +248,6 @@ var
 
 function WindowProc(Window: HWnd; Msg: UInt; WParam: Windows.WParam;
     LParam: Windows.LParam): LResult; stdcall;
-function ComboBoxWindowProc(Window: HWnd; Msg: UInt; WParam: Windows.WParam;
-    LParam: Windows.LParam): LResult; stdcall;
 function CallDefaultWindowProc(Window: HWnd; Msg: UInt; WParam: Windows.WParam;
   LParam: Windows.LParam): LResult;
 

lcl/interfaces/win32/win32wsstdctrls.pp

@@ -37,7 +37,7 @@ uses
   Themes,
 ////////////////////////////////////////////////////
   WSStdCtrls, WSLCLClasses, WSProc, Windows, LCLType,
-  Win32Int, Win32Proc, InterfaceBase, Win32WSControls;
+  Win32Int, Win32Proc, InterfaceBase, Win32WSControls, Win32Extra;
 
 type
 
@@ -316,6 +316,37 @@ const
 
 {$I win32memostrings.inc}
 
+{------------------------------------------------------------------------------
+ Function: ComboBoxWindowProc
+ Params: Window - The window that receives a message
+         Msg    - The message received
+         WParam - Word parameter
+         LParam - Long-integer parameter
+  Returns: 0 if Msg is handled; non-zero long-integer result otherwise
+
+  Handles the messages sent to a combobox control by Windows or other
+  applications
+ ------------------------------------------------------------------------------}
+function ComboBoxWindowProc(Window: HWnd; Msg: UInt; WParam: Windows.WParam;
+    LParam: Windows.LParam): LResult; stdcall;
+begin
+  // darn MS: if combobox has edit control, and combobox receives focus, it
+  // passes it on to the edit, so it will send a WM_KILLFOCUS; inhibit
+  // also don't pass WM_SETFOCUS to the lcl,
+  // it will get one from the edit control
+
+  if ((Msg = WM_KILLFOCUS) or (Msg = WM_SETFOCUS)) and
+     (Windows.GetTopWindow(Window) <> HWND(nil)) then
+  begin
+    // continue normal processing, don't send to lcl
+    Result := CallDefaultWindowProc(Window, Msg, WParam, LParam);
+  end else
+  begin
+    // normal processing
+    Result := WindowProc(Window, Msg, WParam, LParam);
+  end;
+end;
+
 { TWin32WSScrollBar }
 
 class function TWin32WSScrollBar.CreateHandle(const AWinControl: TWinControl;
@@ -694,7 +725,7 @@ begin
   with Params do
   begin
     Flags := Flags or CalcComboBoxWinFlags(TCustomComboBox(AWinControl));
-    If TComboBox(AWinControl).Sorted Then
+    if TComboBox(AWinControl).Sorted Then
       Flags:= Flags or CBS_SORT;
     pClassName := 'COMBOBOX';
     Flags := Flags or (WS_VSCROLL or CBS_AUTOHSCROLL or CBS_HASSTRINGS);
@@ -711,13 +742,17 @@ begin
     Buddy := Windows.GetTopWindow(Window);
     // If the style is CBS_DROPDOWNLIST, GetTopWindow returns null,
     // because the combobox has no edit in that case.
-    if Buddy<>HWND(nil) then begin
+    if Buddy <> HWND(nil) then
+    begin
       SubClassWndProc := @WindowProc;
       WindowCreateInitBuddy(AWinControl, Params);
       BuddyWindowInfo^.isChildEdit := true;
       BuddyWindowInfo^.isComboEdit := true;
-    end else BuddyWindowInfo:=nil;
+    end
+    else
+      BuddyWindowInfo:=nil;
   end;
+
   Result := Params.Window;
 end;