GtkMenuShell

GtkMenuShell — A base class for menu objects

Synopsis

#include <gtk/gtk.h>

                    GtkMenuShell;
void                gtk_menu_shell_append               (GtkMenuShell *menu_shell,
                                                         GtkWidget *child);
void                gtk_menu_shell_prepend              (GtkMenuShell *menu_shell,
                                                         GtkWidget *child);
void                gtk_menu_shell_insert               (GtkMenuShell *menu_shell,
                                                         GtkWidget *child,
                                                         gint position);
void                gtk_menu_shell_deactivate           (GtkMenuShell *menu_shell);
void                gtk_menu_shell_select_item          (GtkMenuShell *menu_shell,
                                                         GtkWidget *menu_item);
void                gtk_menu_shell_select_first         (GtkMenuShell *menu_shell,
                                                         gboolean search_sensitive);
void                gtk_menu_shell_deselect             (GtkMenuShell *menu_shell);
void                gtk_menu_shell_activate_item        (GtkMenuShell *menu_shell,
                                                         GtkWidget *menu_item,
                                                         gboolean force_deactivate);
void                gtk_menu_shell_cancel               (GtkMenuShell *menu_shell);
void                gtk_menu_shell_set_take_focus       (GtkMenuShell *menu_shell,
                                                         gboolean take_focus);
gboolean            gtk_menu_shell_get_take_focus       (GtkMenuShell *menu_shell);
enum                GtkMenuDirectionType;

Object Hierarchy

  GObject
   +----GInitiallyUnowned
         +----GtkObject
               +----GtkWidget
                     +----GtkContainer
                           +----GtkMenuShell
                                 +----GtkMenuBar
                                 +----GtkMenu

Implemented Interfaces

GtkMenuShell implements AtkImplementorIface and GtkBuildable.

Properties

  "take-focus"               gboolean              : Read / Write

Signals

  "activate-current"                               : Run Last / Action
  "cancel"                                         : Run Last / Action
  "cycle-focus"                                    : Run Last / Action
  "deactivate"                                     : Run First
  "move-current"                                   : Run Last / Action
  "move-selected"                                  : Run Last
  "selection-done"                                 : Run First

Description

A GtkMenuShell is the abstract base class used to derive the GtkMenu and GtkMenuBar subclasses.

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

Details

GtkMenuShell

typedef struct _GtkMenuShell GtkMenuShell;

The GtkMenuShell struct contains the following fields. (These fields should be considered read-only. They should never be set by an application.)

GList *children; The list of GtkMenuItem objects contained by this GtkMenuShell.

gtk_menu_shell_append ()

void                gtk_menu_shell_append               (GtkMenuShell *menu_shell,
                                                         GtkWidget *child);

Adds a new GtkMenuItem to the end of the menu shell's item list.

menu_shell :

 a GtkMenuShell.

child :

 The GtkMenuItem to add.

gtk_menu_shell_prepend ()

void                gtk_menu_shell_prepend              (GtkMenuShell *menu_shell,
                                                         GtkWidget *child);

Adds a new GtkMenuItem to the beginning of the menu shell's item list.

menu_shell :

 a GtkMenuShell.

child :

 The GtkMenuItem to add.

gtk_menu_shell_insert ()

void                gtk_menu_shell_insert               (GtkMenuShell *menu_shell,
                                                         GtkWidget *child,
                                                         gint position);

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

menu_shell :

 a GtkMenuShell.

child :

 The GtkMenuItem to add.

position :

 The position in the item list where child is added. Positions are numbered from 0 to n-1.

gtk_menu_shell_deactivate ()

void                gtk_menu_shell_deactivate           (GtkMenuShell *menu_shell);

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

menu_shell :

 a GtkMenuShell.

gtk_menu_shell_select_item ()

void                gtk_menu_shell_select_item          (GtkMenuShell *menu_shell,
                                                         GtkWidget *menu_item);

Selects the menu item from the menu shell.

menu_shell :

 a GtkMenuShell.

menu_item :

 The GtkMenuItem to select.

gtk_menu_shell_select_first ()

void                gtk_menu_shell_select_first         (GtkMenuShell *menu_shell,
                                                         gboolean search_sensitive);

Select the first visible or selectable child of the menu shell; don't select tearoff items unless the only item is a tearoff item.

menu_shell :

 a GtkMenuShell

search_sensitive :

 if TRUE, search for the first selectable menu item, otherwise select nothing if the first item isn't sensitive. This should be FALSE if the menu is being popped up initially.

Since 2.2

gtk_menu_shell_deselect ()

void                gtk_menu_shell_deselect             (GtkMenuShell *menu_shell);

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

menu_shell :

 a GtkMenuShell.

gtk_menu_shell_activate_item ()

void                gtk_menu_shell_activate_item        (GtkMenuShell *menu_shell,
                                                         GtkWidget *menu_item,
                                                         gboolean force_deactivate);

Activates the menu item within the menu shell.

menu_shell :

 a GtkMenuShell.

menu_item :

 The GtkMenuItem to activate.

force_deactivate :

 If TRUE, force the deactivation of the menu shell after the menu item is activated.

gtk_menu_shell_cancel ()

void                gtk_menu_shell_cancel               (GtkMenuShell *menu_shell);

Cancels the selection within the menu shell.

menu_shell :

 a GtkMenuShell

Since 2.4

gtk_menu_shell_set_take_focus ()

void                gtk_menu_shell_set_take_focus       (GtkMenuShell *menu_shell,
                                                         gboolean 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_keyboard_grab()

menu_shell :

 a GtkMenuShell

take_focus :

 TRUE if the menu shell should take the keyboard focus on popup.

Since 2.8

gtk_menu_shell_get_take_focus ()

gboolean            gtk_menu_shell_get_take_focus       (GtkMenuShell *menu_shell);

Returns TRUE if the menu shell will take the keyboard focus on popup.

menu_shell :

 a GtkMenuShell

Returns :

 TRUE if the menu shell will take the keyboard focus on popup.

Since 2.8

enum GtkMenuDirectionType

typedef enum
{
  GTK_MENU_DIR_PARENT,
  GTK_MENU_DIR_CHILD,
  GTK_MENU_DIR_NEXT,
  GTK_MENU_DIR_PREV
} GtkMenuDirectionType;

An enumeration representing directional movements within a menu.

GTK_MENU_DIR_PARENT

 To the parent menu shell.

GTK_MENU_DIR_CHILD

 To the submenu, if any, associated with the item.

GTK_MENU_DIR_NEXT

 To the next menu item.

GTK_MENU_DIR_PREV

 To the previous menu item.

Property Details

The "take-focus" property

  "take-focus"               gboolean              : Read / Write

A boolean that determines whether the menu and its submenus grab the keyboard focus. See gtk_menu_shell_set_take_focus() and gtk_menu_shell_get_take_focus().

Default value: TRUE

Since 2.8

Signal Details

The "activate-current" signal

void                user_function                      (GtkMenuShell *menushell,
                                                        gboolean      force_hide,
                                                        gpointer      user_data)       : Run Last / Action

An action signal that activates the current menu item within the menu shell.

menushell :

 the object which received the signal.

force_hide :

 if TRUE, hide the menu after activating the menu item.

user_data :

 user data set when the signal handler was connected.

The "cancel" signal

void                user_function                      (GtkMenuShell *menushell,
                                                        gpointer      user_data)      : Run Last / Action

An action signal which cancels the selection within the menu shell. Causes the GtkMenuShell::selection-done signal to be emitted.

menushell :

 the object which received the signal.

user_data :

 user data set when the signal handler was connected.

The "cycle-focus" signal

void                user_function                      (GtkMenuShell    *menushell,
                                                        GtkDirectionType arg1,
                                                        gpointer         user_data)      : Run Last / Action

menushell :

 the object which received the signal.

arg1 :

user_data :

 user data set when the signal handler was connected.

The "deactivate" signal

void                user_function                      (GtkMenuShell *menushell,
                                                        gpointer      user_data)      : Run First

This signal is emitted when a menu shell is deactivated.

menushell :

 the object which received the signal.

user_data :

 user data set when the signal handler was connected.

The "move-current" signal

void                user_function                      (GtkMenuShell        *menushell,
                                                        GtkMenuDirectionType direction,
                                                        gpointer             user_data)      : Run Last / Action

An action signal which moves the current menu item in the direction specified by direction.

menushell :

 the object which received the signal.

direction :

 the direction to move.

user_data :

 user data set when the signal handler was connected.

The "move-selected" signal

gboolean            user_function                      (GtkMenuShell *menu_shell,
                                                        gint          distance,
                                                        gpointer      user_data)       : Run Last

The ::move-selected signal is emitted to move the selection to another item.

menu_shell :

 the object on which the signal is emitted

distance :

 +1 to move to the next item, -1 to move to the previous

user_data :

 user data set when the signal handler was connected.

Returns :

 TRUE to stop the signal emission, FALSE to continue

Since 2.12

The "selection-done" signal

void                user_function                      (GtkMenuShell *menushell,
                                                        gpointer      user_data)      : Run First

This signal is emitted when a selection has been completed within a menu shell.

menushell :

 the object which received the signal.

user_data :

 user data set when the signal handler was connected.
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