Function stationary_menu_button_impl 

fn stationary_menu_button_impl<'c, R>(
    ui: &mut Ui,
    button: Button<'_>,
    add_contents: Box<dyn FnOnce(&mut Ui) -> R + 'c>,
) -> InnerResponse<Option<R>>

👎Deprecated: Use egui::containers::menu instead

Build a top level menu with an image button.

Responds to primary clicks.