void SetSurface(HDC dc, Rect &dest, Point &srcoff, Size &bufsz, const RGBA *pixels){
	GuiLock __;
	BitmapInfo32__ bi(bufsz.cx, bufsz.cy);
	::SetDIBitsToDevice(dc,dest.left,dest.top,dest.Width(),dest.Height(),srcoff.x,-srcoff.y-dest.Height()+bufsz.cy,0,bufsz.cy,pixels, bi, DIB_RGB_COLORS);
}

void SetSurface(SystemDraw &w, Rect &dest, Point &srcoff, Size &bufsz, const RGBA *pixels){
	SetSurface(w.GetHandle(),dest,srcoff,bufsz,pixels);
}