Capture part of the HDC Image

 

Hbitmap cxxxdialog: getpartbitmap (HDC hsrcdc, lprect rect)
{
Hbitmap, holdbitmap;
HDC hmemdc;
Int width, height;
Width = ABS (rect-> right-rect-> left );
Height = ABS (rect-> bottom-rect-> top );
Hmemdc = createcompatibledc (hsrcdc );
Hbitmap = createcompatiblebitmap (hsrcdc, width, height );
Holdbitmap = (hbitmap) SelectObject (hmemdc, hbitmap );

Int left = rect-> left> rect-> right? Rect-> right: rect-> left;
Int Top = rect-> top> rect-> bottom? Rect-> bottom: rect-> top;

Bitblt (hmemdc, 0, 0, width, height, hsrcdc, left, top, srccopy );

Hbitmap = (hbitmap) SelectObject (hmemdc, holdbitmap );
Deletedc (hmemdc );

Return hbitmap;
}