#include <CtrlLib/CtrlLib.h>

using namespace Upp;

class LineEditExtended : public LineEdit{
	public:
		virtual void NewScrollPos(){ WhenScrollChange();}
		Callback WhenScrollChange;
		
};

output.WhenScrollChange = THISBACK(ScrollChange);

#include <CtrlLib/CtrlLib.h>

using namespace Upp;

class LineEditExtended : public LineEdit{
public:
	void SetScrollbarLeftClickCallback(Callback cb){ sb.WhenLeftClick=cb; }	
	virtual void NewScrollPos(){ WhenScrollChange();}
	Callback WhenScrollChange;		
};


class mywindow : public TopWindow{
	typedef mywindow CLASSNAME;
public:
	mywindow();
	void When_e_Scroll(){ f.SetScrollPos(e.GetScrollPos()); }
	void When_f_Scroll_click() { PromptOK("Scroll Bar click"); }	
private:
	LineEditExtended e,f;	
};

mywindow::mywindow()
{		
	String s;
	SetRect(0,0,430,200);
	e.LeftPos(10, 200).VSizePos(10,10); 
	f.RightPos(10, 200).VSizePos(10,10);
	
	for(int i=0; i<100; i++) s<<"Hello World! #"<<i<<"\n";
	
	e.Set(s);
	f.Set(s);
	
	e.WhenScrollChange=THISBACK(When_e_Scroll);
	f.SetScrollbarLeftClickCallback(THISBACK(When_f_Scroll_click));
	this<<e<<f;
}


GUI_APP_MAIN
{
	mywindow().Run();
}