Mega Code Archive
Combine two icons
<![CDATA[
Title: combine two icons?
{
I want to combine 2 icons like Windows does with
the links (the small arrow).
Can anyone tell me how that works?
}
function CombineIcons(FrontIcon, BackIcon: HIcon): HIcon;
var
WinDC: HDC;
FrontInfo: TIconInfo;
FrontDC: HDC;
FrontSv: HBITMAP;
BackInfo: TIconInfo;
BackDC: HDC;
BackSv: HBITMAP;
BmpObj: tagBitmap;
begin
WinDC := GetDC(0);
GetIconInfo(FrontIcon, FrontInfo);
FrontDC := CreateCompatibleDC(WinDC);
FrontSv := SelectObject(FrontDC, FrontInfo.hbmMask);
GetIconInfo(BackIcon, BackInfo);
BackDC := CreateCompatibleDC(WinDC);
BackSv := SelectObject(BackDC, BackInfo.hbmMask);
GetObject(FrontInfo.hbmMask, SizeOf(BmpObj), @BmpObj);
BitBlt(BackDC, 0,0,BmpObj.bmWidth, BmpObj.bmHeight, FrontDC, 0,0,SRCAND);
SelectObject(BackDC, BackInfo.hbmColor);
DrawIconEx(BackDC, 0,0,FrontIcon, 0,0,0,0,DI_NORMAL);
Result := CreateIconIndirect(BackInfo);
SelectObject(FrontDC, FrontSv);
DeleteDC(FrontDC);
SelectObject(BackDC, BackSv);
DeleteDC(BackDC);
ReleaseDC(0,WinDC);
DeleteObject(FrontInfo.hbmColor);
DeleteObject(FrontInfo.hbmMask);
DeleteObject(BackInfo.hbmColor);
DeleteObject(BackInfo.hbmMask);
end;
// Remember: The icon created with this function must be destroyed with
// DestroyIcon() function when finished using it.
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