[lmi] Terminating a dialog

[Greg Chicares]

Vadim--Is calling EndModal(wxID_CANCEL) the right way to break out of
a modal dialog? I want to do this when something has gone horribly
wrong in my wxDialog-derived class, but there's no need to terminate
the application.

  // wxEVT_UPDATE_UI handler.
  void MyDialog::MyUpdateUIHandler
  {
      ...
      if(disaster)
          {
          EndModal(wxID_CANCEL);
          MyMessageBox("Oops.");
          }
  }

This seems to work, but I thought I'd ask anyway.