#include <CtrlLib/CtrlLib.h>
#define LAYOUTFILE <droplist/editmask.lay> 
#include <CtrlCore/lay.h>

///////////////////////// class DropDlg //////////////////////
class DropDlg : public WithDropLayout<TopWindow> {
public:
    void testAction();
    typedef DropDlg CLASSNAME;
    DropDlg();
};

void DropDlg::testAction() 
{ 
	PromptOK( AsString( dl.GetIndex() ));  
};

DropDlg::DropDlg()
{ 
    CtrlLayout(*this, "");
    // "key"-"display value" 
    dl.Add(1,   "One");
    dl.Add(2,   "Two");
    dl.Add(3,   "Three");
    dl.Add(4,   "Four");
    dl.WhenAction = THISBACK(testAction); 
}
///////////////////// end class  DropDlg ////////////////////

/*********** new derived class from class DropDlg ******************/
class NewDropDlg : public DropDlg {
    typedef NewDropDlg CLASSNAME;
    NewDropDlg();	
};

NewDropDlg::NewDropDlg()
{ 
  // how to set the constructor of the
  // derived clas to avoid complain from the compiler?
  // please fill one line code!
}
/**************** end derived class ********************************/


void OpenDialog()
{ DropDlg a;
  a.Run();

// run an instance of NewDropDlg
//  NewDropDlg b;
//  b.Run();

}

GUI_APP_MAIN
{ 	TopWindow w;
	Button b;
		
	w.Add(b);
	b.SetLabel("button - testAction");
	b.SetPos(b.PosLeft(200, 250), b.PosTop(100, 30));	
	b.WhenAction=callback(OpenDialog);

	w.Run();
}