#ifndef _SimpleDemo_SimpleDemo_h
#define _SimpleDemo_SimpleDemo_h

#include <CtrlLib/CtrlLib.h>

NAMESPACE_UPP // <- Remember to start "namespacing" ;) before LAYOUTFILE

#define LAYOUTFILE <SimpleDemo/SimpleDemo.lay>
#include <CtrlCore/lay.h>

class SimpleDemo : public WithSimpleDemoLayout<TopWindow> {
	void AddItem();
public:
	typedef SimpleDemo CLASSNAME;
	SimpleDemo();
};

END_UPP_NAMESPACE

#endif

#include "SimpleDemo.h"

using namespace Upp; // <- We want to use Upp components.

SimpleDemo::SimpleDemo()
{
	CtrlLayout(*this, "Shopping List");
	Sizeable().Zoomable();
	arrList.AddColumn("Item");	// Add a column titled "Item"
	arrList.Removing();			// Gives us a right-click menu to delete rows
	btnAdd <<= THISBACK(AddItem);	// Uses a callback to link the button to the function
}

void SimpleDemo::AddItem()
{
	arrList.Add(~strItem);	// The ~ operator calls the object's GetData() function
	strItem <<= Null;		// Manually clear the item
}

GUI_APP_MAIN
{
	SimpleDemo().Run();
}

GUI_APP_MAIN
{
	SimpleDemo().Run();
}

In file included from C:\MyApps\newSimpleDemo\SimpleDemo\SimpleDemo.h:9:0,
                 from C:\MyApps\newSimpleDemo\SimpleDemo\main.cpp:1:
C:\upp\uppsrc/CtrlCore/lay.h:8:20: fatal error: SimpleDemo/SimpleDemo.lay: No such file or directory

#define LAYOUTFILE <newSimpleDemo/SimpleDemo/SimpleDemo.lay>

#ifndef _SimpleDemo_SimpleDemo_h
#define _SimpleDemo_SimpleDemo_h

#include <CtrlLib/CtrlLib.h>

NAMESPACE_UPP

#define LAYOUTFILE <newSimpleDemo/SimpleDemo/SimpleDemo.lay>
#include <CtrlCore/lay.h>

class SimpleDemo : public WithSimpleDemoLayout<TopWindow> {
	void AddItem();
public:
	typedef SimpleDemo CLASSNAME;
	SimpleDemo();
};

END_UPP_NAMESPACE

#endif

- MyApps
    - SimplyDemo
        - SimpleDemo.h
        - etc.

- MyApps
    - SimplyDemo
        - newSimpleDemo
           - SimpleDemo.h
           - etc.

#define LAYOUTFILE <newSimpleDemo/SimpleDemo/SimpleDemo.lay>

#define LAYOUTFILE "C:/upp/examples/SimpleDemo/SimpleDemo.lay"