Function egui::menu::menu_button

source · 
pub fn menu_button<R>(
    ui: &mut Ui,
    title: impl Into<WidgetText>,
    add_contents: impl FnOnce(&mut Ui) -> R
) -> InnerResponse<Option<R>>
Expand description

Construct a top level menu in a menu bar. This would be e.g. “File”, “Edit” etc.

Responds to primary clicks.

Returns None if the menu is not open.