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class Gtk::MenuShell

A Gtk::MenuShell is the abstract base class used to derive the Gtk::Menu and Gtk::MenuBar subclasses.

A Gtk::MenuShell is a container of Gtk::MenuItem objects arranged in a list which can be navigated, selected, and activated by the user to perform application functions. A Gtk::MenuItem can have a submenu associated with it, allowing for nested hierarchical menus.

Object Hierarchy

Object
- GLib::Instantiatable
  - GLib::Object
    - Gtk::Object
      - Gtk::Widget
        
        Gtk::Container
        
        Gtk::MenuShell

Instance Methods

append(child)

Adds a new Gtk::MenuItem to the end of the menu shell's item list.

child: The Gtk::MenuItem to add.
Returns: self

prepend(child)

Adds a new Gtk::MenuItem to the beginning of the menu shell's item list.

child: The Gtk::MenuItem to add.

insert(child, position)

Adds a new Gtk::MenuItem to the menu shell's item list at the position indicated by position.

child: The Gtk::MenuItem to add.
position: The position in the item list where child is added. Positions are numbered from 0 to n-1.
Returns: self

deactivate

Deactivates the menu shell. Typically this results in the menu shell being erased from the screen.

Returns: self

select_item(menu_item)

Selects the menu item from the menu shell.

menu_item : The Gtk::MenuItem to select.
Returns: self

deselect

Deselects the currently selected item from the menu shell, if any.

Returns: self

activate_item

Activates the menu item within the menu shell.

menu_item: The Gtk::MenuItem to activate.
force_deactivate: If true, force the deactivation of the menu shell after the menu item is activated.

take_focus

Returns true if the menu shell will take the keyboard focus on popup. Since 2.8

take_focus=(take_focus)

If take_focus is true (the default) the menu shell will take the keyboard focus so that it will receive all keyboard events which is needed to enable keyboard navigation in menus. Setting take_focus to false is useful only for special applications like virtual keyboard implementations which should not take keyboard focus. The take_focus state of a menu or menu bar is automatically propagated to submenus whenever a submenu is popped up, so you don't have to worry about recursively setting it for your entire menu hierarchy. Only when programmatically picking a submenu and popping it up manually, the take-focus property of the submenu needs to be set explicitely. Note that setting it to false has side-effects: if the focus is in some other app, it keeps the focus and keynav in the menu doesn't work. Consequently, keynav on the menu will only work if the focus is on some toplevel owned by the onscreen keyboard. To avoid confusing the user, menus with take_focus set to false should not display mnemonics or accelerators, since it cannot be guaranteed that they will work. See also Gdk#Gdk.keyboard_grab?. Since 2.8

take_focus: true if the menu shell should take the keyboard focus on popup.
returns: take_focus

set_take_focus(take_focus)