void PaintLabelBox(Draw& w, Size sz, Color color, int d)
{
...
   ChPaintEdge(w, r, look);
...
}

struct sChLook_LabelBox {
	Image img;
};

Value Make_ChLook_LabelBox(const Image& img)
{
	sChLook_LabelBox x;
	x.img = MakeButton(8, img, 2, Blue());
	return RawToValue(x);
}

Value ChLookFn_LabelBox(Draw& w, const Rect& r, const Value& v, int op, Color ink) {
	
	if( v.Is<sChLook_LabelBox>() )
	{
		const sChLook_LabelBox& e = v.To<sChLook_LabelBox>();
		ChPaint(w, r, e.img);
		return 1;
	}
	return Null;
}

INITBLOCK {
	ChLookFn(ChLookFn_LabelBox);
}

	static const Value myLabelBoxLook = Make_ChLook_LabelBox(GraphCtrl_DemoImg::CTRL_BACKGND());
	LabelBox::SetLook( myLabelBoxLook );