struct MyPicDisplay : public Display
{
	virtual void Paint(Draw& w, const Rect& r, const Value& q, Color ink, Color paper, dword style) const
	{
		w.DrawRect(r, paper);
		Image img{};
		img= ??? how to get it from q ???
		if (!img.IsNullInstance()||img.IsEmpty()) w.DrawImage(r, img);
	}
};
//background info:
void someclass::ArShowPic(Image pic)
{
	//ar is an ArrayCtrl..
	//the column was declared with: ar.AddColumn().SetDisplay(Single<MyPicDisplay>());
	ar.Add(pic); //this invokes the display code where I have my problem.
}