- // Behaviour changed in 2.0: we'll send a Cancel message
- // to the dialog instead of Close.
- wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
- cancelEvent.SetEventObject( this );
- GetEventHandler()->ProcessEvent(cancelEvent);
-
- return;
+ // Behaviour changed in 2.0: we'll send a Cancel message
+ // to the dialog instead of Close.
+ wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+ cancelEvent.SetEventObject( this );
+ GetEventHandler()->ProcessEvent(cancelEvent);
+
+ // ensure that there is another message for this window so the
+ // ShowModal loop will exit and won't get stuck in GetMessage().
+ ::PostMessage(GetHwnd(), WM_NULL, 0, 0);
+ return;