[delphi-en] Menu of MDIChild from DLL AV problem

[Jacek Hajnrych]

I have DLLs (plugins) with its own windows and its menus. I'm using typical
Connect function in my DLL:

var 
  DllApp: TApplication;
  DLLScr: TScreen;

function Connect(App, Scr: Integer): PChar; stdcall;
begin
  Result := PChar(PLUGIN_NAME);
  DLLApp := Application;
  DLLScr := Screen;
  Application := TApplication(App);
  Screen := TScreen(Scr);
end;

Another exported function (DoPlugin) creates MDIChild window. That window
has its own MainMenu component with GroupIndex assigned to 1 (while main
form uses GroupIndex 0). When the MDIChild window is created its menu is
merged with main window menu. But clicking any menu item from MDIChild form
causes AV. I'm google'ing for help but with no success. I'm using D2007 Pro.
What causes that AV?


Regards,
Jacek