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# Gtk::MenuItem Class Reference
[Widgets, Menu classes]

Inheritance diagram for Gtk::MenuItem:

[legend]

List of all members.

## Detailed Description

Child item for menus.

Handle highlighting, alignment, events and submenus. As it derives from Gtk::Bin it can hold any valid child widget, altough only a few are really useful.

## Public Member Functions

void | accelerate (Window& window)
void | activate ()
| For widgets that can be "activated" (buttons, menu items, etc.
void | deselect ()
Glib::ustring | get_accel_path () const
| Retrieve the accelerator path that was previously set on menu_item.
bool | get_right_justified () const
| Gets whether the menu item appears justified at the right side of the menu bar.
const Menu* | get_submenu () const
| Gets the submenu underneath this menu item, if any.
Menu* | get_submenu ()
| Gets the submenu underneath this menu item, if any.
const GtkMenuItem* | gobj () const
| Provides access to the underlying C GtkObject.
GtkMenuItem* | gobj ()
| Provides access to the underlying C GtkObject.
bool | has_submenu () const
| MenuItem (const Glib::ustring& label, bool mnemonic=false)
| Create a menu item with label.
| MenuItem (Widget& widget)
| Create a menu item with widget.
| MenuItem ()
| Create an empty menu item.
Glib::PropertyProxy_ReadOnly <bool> | property_right_justified () const
| Sets whether the menu item appears justified at the right side of a menu bar.
Glib::PropertyProxy<bool> | property_right_justified ()
| Sets whether the menu item appears justified at the right side of a menu bar.
Glib::PropertyProxy_ReadOnly <Gtk::Menu*> | property_submenu () const
| The submenu attached to the menu item.
Glib::PropertyProxy<Gtk::Menu*> | property_submenu ()
| The submenu attached to the menu item.
void | remove_submenu ()
| Removes the widget's submenu.
void | select ()
void | set_accel_path (const Glib::ustring& accel_path)
| Set the accelerator path on menu_item, through which runtime changes of the menu item's accelerator caused by the user can be identified and saved to persistant storage (see Gtk::AccelMap::save() on this).
void | set_right_justified (bool right_justified=true)
| Sets whether the menu item appears justified at the right side of a menu bar.
void | set_submenu (Menu& submenu)
| Sets or replaces the menu item's submenu, or removes it when a `0` submenu is passed.
Glib::SignalProxy0<void> | signal_activate ()
Glib::SignalProxy0<void> | signal_activate_item ()
Glib::SignalProxy1<void, int> | signal_toggle_size_allocate ()
Glib::SignalProxy1<void, int*> | signal_toggle_size_request ()
void | toggle_size_allocate (int allocation)
void | toggle_size_request (int& requisition)
void | unset_accel_path ()
virtual | ~MenuItem ()

## Protected Member Functions

void | add_accel_label (const Glib::ustring& label, bool mnemonic=true)
virtual void | on_activate ()
virtual void | on_activate_item ()
virtual void | on_toggle_size_allocate (int allocation)
virtual void | on_toggle_size_request (int* requisition)
void | set_accel_key (const AccelKey& accel_key)

## Friends

class | Menu_Helpers::Element

## Related Functions

(Note that these are not member functions.)
Gtk::MenuItem* | wrap (GtkMenuItem* object, bool take_copy=false)
| A Glib::wrap() method for this object.

## Constructor & Destructor Documentation

virtual Gtk::MenuItem::~MenuItem | ( |  | ) | `[virtual]`

Gtk::MenuItem::MenuItem | ( |  | ) |

Create an empty menu item.

Gtk::MenuItem::MenuItem | ( | Widget& | widget | ) | `[explicit]`

Create a menu item with widget.

Gtk::MenuItem::MenuItem | ( | const Glib::ustring & | label,
|  | bool | mnemonic = `false` |
| ) |  |  | `[explicit]`

Create a menu item with label.

## Member Function Documentation

void Gtk::MenuItem::accelerate | ( | Window& | window | ) |

void Gtk::MenuItem::activate | ( |  | ) |

For widgets that can be "activated" (buttons, menu items, etc.

) this function activates them. Activation is what happens when you press Enter on a widget during key navigation. If widget isn't activatable, the function returns `false`.

Returns:
  `true` if the widget was activatable.

Reimplemented from Gtk::Widget.

void Gtk::MenuItem::add_accel_label | ( | const Glib::ustring & | label,
|  | bool | mnemonic = `true` |
| ) |  |  | `[protected]`

void Gtk::MenuItem::deselect | ( |  | ) |

Reimplemented from Gtk::Item.

Glib::ustring Gtk::MenuItem::get_accel_path | ( |  | ) | const

Retrieve the accelerator path that was previously set on menu_item.

See set_accel_path() for details.

Returns:
  The accelerator path corresponding to this menu item's functionality, or `0` if not set

Since gtkmm 2.14:

bool Gtk::MenuItem::get_right_justified | ( |  | ) | const

Gets whether the menu item appears justified at the right side of the menu bar.

Returns:
  `true` if the menu item will appear at the far right if added to a menu bar.

const Menu* Gtk::MenuItem::get_submenu | ( |  | ) | const

Gets the submenu underneath this menu item, if any.

See set_submenu().

Returns:
  Submenu for this menu item, or `0` if none.

Menu* Gtk::MenuItem::get_submenu | ( |  | ) |

Gets the submenu underneath this menu item, if any.

See set_submenu().

Returns:
  Submenu for this menu item, or `0` if none.

const GtkMenuItem* Gtk::MenuItem::gobj | ( |  | ) | const`[inline]`

Provides access to the underlying C GtkObject.

Reimplemented from Gtk::Item.

Reimplemented in Gtk::CheckMenuItem, Gtk::ImageMenuItem, Gtk::RadioMenuItem, Gtk::SeparatorMenuItem, and Gtk::TearoffMenuItem.

GtkMenuItem* Gtk::MenuItem::gobj | ( |  | ) | `[inline]`

Provides access to the underlying C GtkObject.

Reimplemented from Gtk::Item.

Reimplemented in Gtk::CheckMenuItem, Gtk::ImageMenuItem, Gtk::RadioMenuItem, Gtk::SeparatorMenuItem, and Gtk::TearoffMenuItem.

bool Gtk::MenuItem::has_submenu | ( |  | ) | const

virtual void Gtk::MenuItem::on_activate | ( |  | ) | `[protected, virtual]`

virtual void Gtk::MenuItem::on_activate_item | ( |  | ) | `[protected, virtual]`

virtual void Gtk::MenuItem::on_toggle_size_allocate | ( | int | allocation | ) | `[protected, virtual]`

virtual void Gtk::MenuItem::on_toggle_size_request | ( | int * | requisition | ) | `[protected, virtual]`

Glib::PropertyProxy_ReadOnly<bool> Gtk::MenuItem::property_right_justified | ( |  | ) | const

Sets whether the menu item appears justified at the right side of a menu bar.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:
  A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

Glib::PropertyProxy<bool> Gtk::MenuItem::property_right_justified | ( |  | ) |

Sets whether the menu item appears justified at the right side of a menu bar.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:
  A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

Glib::PropertyProxy_ReadOnly<Gtk::Menu*> Gtk::MenuItem::property_submenu | ( |  | ) | const

The submenu attached to the menu item.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:
  A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

Glib::PropertyProxy<Gtk::Menu*> Gtk::MenuItem::property_submenu | ( |  | ) |

The submenu attached to the menu item.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:
  A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

void Gtk::MenuItem::remove_submenu | ( |  | ) |

Removes the widget's submenu.

Deprecated: 2.12: remove_submenu() is deprecated and should not be used in newly written code. Use set_submenu() instead.

void Gtk::MenuItem::select | ( |  | ) |

Reimplemented from Gtk::Item.

void Gtk::MenuItem::set_accel_key | ( | const AccelKey& | accel_key | ) | `[protected]`

void Gtk::MenuItem::set_accel_path | ( | const Glib::ustring & | accel_path | ) |

Set the accelerator path on menu_item, through which runtime changes of the menu item's accelerator caused by the user can be identified and saved to persistant storage (see Gtk::AccelMap::save() on this).

To setup a default accelerator for this menu item, call Gtk::AccelMap::add_entry() with the same accel_path. See also Gtk::AccelMap::add_entry() on the specifics of accelerator paths, and set_accel_path() for a more convenient variant of this function.

This function is basically a convenience wrapper that handles calling Gtk::Widget::set_accel_path() with the appropriate accelerator group for the menu item.

Note that you do need to set an accelerator on the parent menu with set_accel_group() for this to work.

Parameters:

  | accel_path | Accelerator path, corresponding to this menu item's functionality.

void Gtk::MenuItem::set_right_justified | ( | bool | right_justified = `true` | ) |

Sets whether the menu item appears justified at the right side of a menu bar.

This was traditionally done for "Help" menu items, but is now considered a bad idea. (If the widget layout is reversed for a right-to-left language like Hebrew or Arabic, right-justified-menu-items appear at the left.)

Parameters:

  | right_justified | If `true` the menu item will appear at the far right if added to a menu bar.

void Gtk::MenuItem::set_submenu | ( | Menu& | submenu | ) |

Sets or replaces the menu item's submenu, or removes it when a `0` submenu is passed.

Parameters:

  | submenu | The submenu, or `0`.

Glib::SignalProxy0< void > Gtk::MenuItem::signal_activate | ( |  | ) |

Prototype:
  `void on_my_activate()`

Glib::SignalProxy0< void > Gtk::MenuItem::signal_activate_item | ( |  | ) |

Prototype:
  `void on_my_activate_item()`

Glib::SignalProxy1< void,int > Gtk::MenuItem::signal_toggle_size_allocate | ( |  | ) |

Prototype:
  `void on_my_toggle_size_allocate(int allocation)`

Glib::SignalProxy1< void,int* > Gtk::MenuItem::signal_toggle_size_request | ( |  | ) |

Prototype:
  `void on_my_toggle_size_request(int* requisition)`

void Gtk::MenuItem::toggle_size_allocate | ( | int | allocation | ) |

void Gtk::MenuItem::toggle_size_request | ( | int & | requisition | ) |

void Gtk::MenuItem::unset_accel_path | ( |  | ) |

## Friends And Related Function Documentation

friend class Menu_Helpers::Element`[friend]`

Gtk::MenuItem* wrap | ( | GtkMenuItem * | object,
|  | bool | take_copy = `false` |
| ) |  |  | `[related]`

A Glib::wrap() method for this object.

Parameters:

  | object | The C instance.
  | take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns:
  A C++ instance that wraps this C instance.

The documentation for this class was generated from the following file:

- menuitem.h