egui::menu

Function stationary_menu_impl

Source 
fn stationary_menu_impl<'c, R>(
    ui: &mut Ui,
    title: impl Into<WidgetText>,
    add_contents: Box<dyn FnOnce(&mut Ui) -> R + 'c>,
) -> InnerResponse<Option<R>>
Expand description

Build a top level menu with a button.

Responds to primary clicks.