#include <CtrlLib/CtrlLib.h>

using namespace Upp;

struct Tab0: ParentCtrl {
	Button bt;
	Tab0() { Add(bt.SetLabel("Bt 0").LeftPos(10,100).TopPosZ(10,20)); }
};

struct Tab1: ParentCtrl {
	Button bt;
	Tab1() { Add(bt.SetLabel("Bt 1").LeftPos(10,100).TopPosZ(10,20)); }
};

struct Tab2: ParentCtrl {
	Button bt;
	Tab2() { Add(bt.SetLabel("Bt 2").LeftPos(10,100).TopPosZ(10,20)); }
};

struct Test: TopWindow {
	TabCtrl Tabs;
	Tab0 tab0;
	Tab1 tab1;
	Tab2 tab2;
	Test() {
		SetRect(0, 0, 640, 480);
		Add(Tabs.SizePos());
		Tabs.Add(tab0.SizePos(), "Tab 0");
		Tabs.Add(tab1.SizePos(), "Tab 1");
		Tabs.Add(tab2.SizePos(), "Tab 2");
		Tabs.WhenSet = [this] {
			switch (Tabs.Get()) {
				case 0: ErrorOK("Tab 0"); break;
				case 1: ErrorOK("Tab 1"); break;
				case 2: ErrorOK("Tab 2");
			}
		};
//		WhenClose = [this] { Tabs.WhenSet=Null; Close(); };	// this helps to prevent unwanted events
	}
};

GUI_APP_MAIN {
	Test().Run();
}