#include <CtrlLib/CtrlLib.h>

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

class Days : public WithDaysLayout<TopWindow> {
public:

    typedef Days CLASSNAME;
    Days();
};

Days::Days()
{
    CtrlLayout(*this, "Days");
    date1 ^= date2 ^= [=] {
        result = IsNull(date1) || IsNull(date2) ? "" :
                 Format("There is %d day(s) between %` and %`", abs(Date(~date1) - Date(~date2)), ~date1, ~date2);
    };
}

GUI_APP_MAIN
{
    Days().Run();
}