#include <CtrlLib/CtrlLib.h>

using namespace Upp;

struct MyApp : public TopWindow
{
	MyApp()
	{
		lt.SetLabel("5x5");
		rt.SetLabel("5x2");
		lb.SetLabel("2x5");
		rb.SetLabel("2x2");
		
		Add(lt);
		Add(rt);
		Add(lb);
		Add(rb);
	}
	virtual void Layout()
	{
		Size sz=GetSize();
		int w1,h1;
		w1=sz.cx*5/7;
		h1=sz.cy*5/7;
		lt.LeftPos(0,w1).TopPos(0,h1);
		rt.LeftPos(w1,sz.cx-w1).TopPos(0,h1);
		lb.LeftPos(0,w1).TopPos(h1,sz.cy-h1);
		rb.LeftPos(w1, sz.cx-w1).TopPos(h1,sz.cy-h1);
	}
	
	Button lt, rt, lb, rb;
};

GUI_APP_MAIN
{
	MyApp().Sizeable().Run();
}

	virtual void Layout()
	{
		Size sz=GetSize();
		int w1,h1,w2,h2;
		
		w1=sz.cx*5/7;
		h1=sz.cy*5/7;
		w2=sz.cx-w1;
		h2=sz.cy-h1;
		lt.SetRect(0,0,w1,h1);
		rt.SetRect(w1,0,w2,h1);
		lb.SetRect(0,h1,w1,h2);
		rb.SetRect(w1,h1,w2,h2);
	}

Size Designsz = OriginalLayoutSizePos (const)
Size wsz = GetSizePos(MainWindow);  // current sizepos
int ratiox = wsz.x / Designsz.x;    // amount of X change
int ratioy = wsz.y / Designsz.y;    // amount of Y change

// for each widget on the layout, (helps to add/remove widgets later on as the project grows)
for (Widget=0; Widget < LastWidget; Widget++)
{
   // scale each widget.  Maybe I need to adjust the LeftPos and TopPos too for each widget
   Widgets[Widget].Size.x *= ratiox
   Widgets[Widget].Size.y *= ratioy
}

// update all widgets on the layout
Refresh();