_CopyToFront
_CopyToFront(srcOffset, srcBPR, r.left, r.top, r.right, r.bottom);
_CopyToFront(buffer, width * 4, area.left, area.top, area.right,
_CopyToFront(fCursorAreaBackup->buffer, fCursorAreaBackup->bpr,
void _CopyToFront(uint8* src, uint32 srcBPR, int32 x,