#include <CtrlLib/CtrlLib.h>

using namespace Upp;

class App : public TopWindow {
public:
	typedef App CLASSNAME;
	App();
	// Ctrls
	EditString text; // or EditStringNotNull
	ArrayCtrl list;
	// Events
	bool OnAcceptRow();
};

App::App()
{
	Title("Data validation example");
	CenterScreen().Sizeable().MinimizeBox().MaximizeBox();
	SetRect(Size(320, 240));

	Add(list.SizePos());

	text.NotNull().TrimBoth(true);

	list.Appending();
	list.AddColumn("Text").Edit(text);
	list.WhenAcceptRow = THISBACK(OnAcceptRow);
}

bool App::OnAcceptRow()
{
	const String& data = text.GetData();

	if (data.IsEmpty())
		return false;

	return true;
}

GUI_APP_MAIN
{
	Ctrl::GlobalBackPaint();

	App app;
	app.Run();
}