TIWCalendar in modal window

[joergb]

Sorry for entering the old thread...

but I have just the problem. IWCalendar in a Modal window. Clicking Prev or next in Calendar the modal Window is cleared and nothing else happen

IW 15.5.3
CBuilder 10.2.3
IWCalendar.AsyncMode is true

ModalWindowParameters:
  IWMdlWCal->Reset();
  IWMdlWCal->Autosize  = false;
  IWMdlWCal->HasFooter = false;
  IWMdlWCal->HasHeader = false;
  IWMdlWCal->SizeUnit = suPixel; 
  IWMdlWCal->ContentElement = IWCalendar1; 
  IWMdlWCal->Buttons->Add("Übernehmen|NoClose");
  IWMdlWCal->Buttons->Add("Schliessen");
  IWMdlWCal->WindowHeight= 250;
  IWMdlWCal->WindowWidth = 300;
  IWMdlWCal->Show();   


Thanks
  Jörg