User-defined dialogs

userdef_d = Pmw.Dialog(self.master,
      title="Programmer-Defined Dialog",
      buttons=('Apply', 'Cancel'),
      #defaultbutton='Apply',
      command=userdef_dialog_action)

frame = userdef_d.interior()
# stack widgets in frame as you want...
...

def userdef_dialog_action(result):
    if result == "Apply":
        # extract dialog variables ...
    else:
        # you canceled the dialog
    self.userdef_d.destroy()  # destroy dialog window