[lazarus] BitButton in Win32
Martin Smat
martin.smat at tiscali.cz
Fri Sep 5 12:36:38 EDT 2003
Hi,
I tried to implement the bitmap buttons under win32 interface to show
correctly the image and the button caption (now the caption is not
displayed - it's because the button is defined with flag BS_BITMAP). It
should be defined with flag BS_OWNERDRAW and painted in processing
WM_DRAWITEM message.
In WM_DRAWITEM I filled the TLMDrawItems structure. The LM_DRAWITEM
message is processed in procedure TCustomForm.WndProc but only for
ODT_MENU. Can this procedure be extended about processing ODT_BUTTON?
I think something like this:
...
if CtlType = ODT_BUTTON then
begin
CNSendMessage(LM_DRAWITEM, TObject(GetProp(hwndItem ,'WinControl')),
Pointer(TheMessage.LParam)); { or calling an interface function - what
would be better? }
end;
...
When processing ODT_BUTTON will be there I will make the rest and send a
patch.
Martin Smat.
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