Ctrl::

	static const char *GetZoomText();
	static void SetZoomSize(Size sz, Size bsz = Size(0, 0));
	static int  HorzLayoutZoom(int cx);
	static int  VertLayoutZoom(int cy);
	static Size LayoutZoom(int cx, int cy);
	static Size LayoutZoom(Size sz);
	static void NoLayoutZoom();
	static void GetZoomRatio(Size& m, Size& d);

	static int  HZoom(int cx)                            { return HorzLayoutZoom(cx); }