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

Child item for menus. More...

Inheritance diagram for Gtk::MenuItem:
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Collaboration diagram for Gtk::MenuItem:
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List of all members.

## Public Member Functions

virtual | ~MenuItem ()
GtkMenuItem* | gobj ()
| Provides access to the underlying C GtkObject.
const GtkMenuItem* | gobj () const
| Provides access to the underlying C GtkObject.
| MenuItem ()
| Create an empty menu item.
| MenuItem (Widget& widget)
| Create a menu item with widget.
| MenuItem (const Glib::ustring& label, bool mnemonic=false)
| Create a menu item with label.
void | set_submenu (Menu& submenu)
| Sets or replaces the menu item's submenu, or removes it when a `0` submenu is passed.
void | unset_submenu ()
| Remove the menu item's sub-menu.
Menu* | get_submenu ()
| Gets the submenu underneath this menu item, if any.
const Menu* | get_submenu () const
| Gets the submenu underneath this menu item, if any.
bool | has_submenu () const
void | select ()
void | deselect ()
void | activate ()
| For widgets that can be "activated" (buttons, menu items, etc.) this function activates them.
void | toggle_size_request (int& requisition)
void | toggle_size_allocate (int allocation)
void | set_right_justified (bool right_justified=true)
| Sets whether the menu item appears justified at the right side of a menu bar.
bool | get_right_justified () const
| Gets whether the menu item appears justified at the right side of the menu bar.
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 | unset_accel_path ()
Glib::ustring | get_accel_path () const
| Retrieve the accelerator path that was previously set on menu_item.
void | set_label (const Glib::ustring& label)
| Sets text on the menu_item label.
Glib::ustring | get_label () const
| Sets text on the menu_item label.
void | set_use_underline (bool setting=true)
| If true, an underline in the text indicates the next character should be used for the mnemonic accelerator key.
bool | get_use_underline () const
| Checks if an underline in the text indicates the next character should be used for the mnemonic accelerator key.
void | set_reserve_indicator (bool reserve=true)
bool | get_reserve_indicator () const
Glib::SignalProxy0< void > | signal_activate ()
Glib::SignalProxy0< void > | signal_activate_item ()
Glib::SignalProxy1< void, int* > | signal_toggle_size_request ()
Glib::SignalProxy1< void, int > | signal_toggle_size_allocate ()
void | accelerate (Window& window)
Glib::PropertyProxy< bool > | property_right_justified ()
| Sets whether the menu item appears justified at the right side of a menu bar.
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< Gtk::Menu* > | property_submenu ()
| The submenu attached to the menu item, or NULL if it has none.
Glib::PropertyProxy_ReadOnly < Gtk::Menu* > | property_submenu () const
| The submenu attached to the menu item, or NULL if it has none.
Glib::PropertyProxy < Glib::ustring > | property_accel_path ()
| Sets the accelerator path of the menu item.
Glib::PropertyProxy_ReadOnly < Glib::ustring > | property_accel_path () const
| Sets the accelerator path of the menu item.
Glib::PropertyProxy < Glib::ustring > | property_label ()
| The text for the child label.
Glib::PropertyProxy_ReadOnly < Glib::ustring > | property_label () const
| The text for the child label.
Glib::PropertyProxy< bool > | property_use_underline ()
| If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key.
Glib::PropertyProxy_ReadOnly < bool > | property_use_underline () const
| If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key.

## Protected Member Functions

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

## 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.

## 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.

## 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 | ( | ) |

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.

Since gtkmm 2.14:

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

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

Sets text on the menu_item label.

Since gtkmm 2.16:

Returns:
  The text in the menu_item label. This is the internal string used by the label, and must not be modified.

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

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.

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

Checks if an underline in the text indicates the next character should be used for the mnemonic accelerator key.

Since gtkmm 2.16:

Returns:
  `true` if an embedded underline in the label indicates the mnemonic accelerator key.

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

Provides access to the underlying C GtkObject.

Reimplemented from Gtk::Activatable.

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::Activatable.

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<Glib::ustring> Gtk::MenuItem::property_accel_path | ( | ) |

Sets the accelerator path of 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_ReadOnly<Glib::ustring> Gtk::MenuItem::property_accel_path | ( | ) | const

Sets the accelerator path of 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_ReadOnly<Glib::ustring> Gtk::MenuItem::property_label | ( | ) | const

The text for the child label.

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<Glib::ustring> Gtk::MenuItem::property_label | ( | ) |

The text for the child label.

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

The submenu attached to the menu item, or NULL if it has none.

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, or NULL if it has none.

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_use_underline | ( | ) |

If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key.

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<bool> Gtk::MenuItem::property_use_underline | ( | ) | const

If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key.

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::select | ( | ) |

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_label | ( | const Glib::ustring & | label ) |

Sets text on the menu_item label.

Since gtkmm 2.16:

Parameters:

  label | The text you want to set.

void Gtk::MenuItem::set_reserve_indicator | ( | bool | reserve = `true` ) |

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`.

void Gtk::MenuItem::set_use_underline | ( | bool | setting = `true` ) |

If true, an underline in the text indicates the next character should be used for the mnemonic accelerator key.

Since gtkmm 2.16:

Parameters:

  setting | `true` if underlines in the text indicate mnemonics.

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 | ( | ) |

void Gtk::MenuItem::unset_submenu | ( | ) |

Remove the menu item's sub-menu.

Since gtkmm 2.22:

## Friends And Related Function Documentation

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:

- gtkmm/menuitem.h