bool displayThumbnail(int wndNum, int left, int top)
{
SIZE size;
DwmQueryThumbnailSourceSize(windowList[wndNum].thumbnail, out size);
THUMBNAIL_PROPERTIES props = new THUMBNAIL_PROPERTIES();
props.dwFlags = DWM_TNP_OPACITY | DWM_TNP_RECTDESTINATION | DWM_TNP_VISIBLE;
props.fVisible = true;
props.opacity = 255;
props.rcDest = new RECT(left, top, left + 180, top + 180);
return (DwmUpdateThumbnailProperties(windowList[wndNum].thumbnail, ref props) == S_OK);
}
static extern int DwmUpdateThumbnailProperties(IntPtr thumbnail, ref THUMBNAIL_PROPERTIES prnProperites);
