1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
| Procedure PrintBitmap(Canvas: TCanvas; DestRect: TRect; Bitmap: TBitmap);
Var
BitmapHeader: pBitmapInfo;
BitmapImage : POINTER;
HeaderSize : DWORD; // Use DWORD for D3-D5 compatibility
ImageSize : DWORD;
BEGIN
GetDIBSizes(Bitmap.Handle, HeaderSize, ImageSize);
GetMem(BitmapHeader, HeaderSize);
GetMem(BitmapImage, ImageSize);
Try
GetDIB(Bitmap.Handle, Bitmap.Palette, BitmapHeader^, BitmapImage^);
StretchDIBits(Canvas.Handle,
DestRect.Left, DestRect.Top, // Destination Origin
DestRect.Right - DestRect.Left, // Destination Width
DestRect.Bottom - DestRect.Top, // Destination Height
0, 0, // Source Origin
Bitmap.Width, Bitmap.Height, // Source Width & Height
BitmapImage,
TBitmapInfo(BitmapHeader^),
DIB_RGB_COLORS,
SRCCOPY)
Finally
FreeMem(BitmapHeader);
FreeMem(BitmapImage)
End;
END; |
Partager