Show a combobox menu
        
        Usage: C{dialog.combo_menu(options, title="Choose an option", message="Choose an option", **kwargs)}
        
        @param options: list of options (strings) for the dialog
        @param title: window title for the dialog
        @param message: message displayed above the combobox
        @return: a tuple containing the exit code and user choice
        @rtype: C{DialogData(int, str)}

def combo_menu(self, options, title="Choose an option", message="Choose an option", **kwargs):
        """
        Show a combobox menu
        
        Usage: C{dialog.combo_menu(options, title="Choose an option", message="Choose an option", **kwargs)}
        
        @param options: list of options (strings) for the dialog
        @param title: window title for the dialog
        @param message: message displayed above the combobox
        @return: a tuple containing the exit code and user choice
        @rtype: C{DialogData(int, str)}
        """
        return self._run_kdialog(title, ["--combobox", message] + options, kwargs)