menu.toggleButtons()
m.toggleButtons(true | false | () )
Makes the buttons of the menu stay down when clicked. Only when
the button is clicked again, it will turn up. Programming
logic is completely the responsability of the programmer.
Like all functions of this kind, the method can be called
in three ways: without a parameter, in which case it returns the
actual status as a boolean, or with one parameter:
true or false, in which case it sets the status
Toggling can be done by
m.toggleButtons ( ! m.toggleButtons() )