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Functions
void | gtk_menu_shell_append () |
void | gtk_menu_shell_prepend () |
void | gtk_menu_shell_insert () |
void | gtk_menu_shell_deactivate () |
void | gtk_menu_shell_select_item () |
void | gtk_menu_shell_select_first () |
void | gtk_menu_shell_deselect () |
void | gtk_menu_shell_activate_item () |
void | gtk_menu_shell_cancel () |
void | gtk_menu_shell_set_take_focus () |
gboolean | gtk_menu_shell_get_take_focus () |
GtkWidget * | gtk_menu_shell_get_selected_item () |
GtkWidget * | gtk_menu_shell_get_parent_shell () |
void | gtk_menu_shell_bind_model () |
Signals
void | activate-current | Action |
void | cancel | Action |
void | cycle-focus | Action |
void | deactivate | Run First |
void | insert | Run First |
void | move-current | Action |
gboolean | move-selected | Run Last |
void | selection-done | Run First |
Object Hierarchy
GObject ╰── GInitiallyUnowned ╰── GtkWidget ╰── GtkContainer ╰── GtkMenuShell ├── GtkMenuBar ╰── GtkMenu
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.
Terminology
A menu item can be “selected”, this means that it is displayed in the prelight state, and if it has a submenu, that submenu will be popped up.
A menu is “active” when it is visible onscreen and the user is selecting from it. A menubar is not active until the user clicks on one of its menuitems. When a menu is active, passing the mouse over a submenu will pop it up.
There is also is a concept of the current menu and a current menu item. The current menu item is the selected menu item that is furthest down in the hierarchy. (Every active menu shell does not necessarily contain a selected menu item, but if it does, then the parent menu shell must also contain a selected menu item.) The current menu is the menu that contains the current menu item. It will always have a GTK grab and receive all key presses.
Functions
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.
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.
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
.
Parameters
menu_shell |
||
child |
The GtkMenuItem to add |
|
position |
The position in the item list where |
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.
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.
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.
Parameters
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.
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.
Parameters
menu_shell |
||
menu_item |
the GtkMenuItem to activate |
|
force_deactivate |
if |
gtk_menu_shell_cancel ()
void
gtk_menu_shell_cancel (GtkMenuShell *menu_shell
);
Cancels the selection within the menu shell.
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 explicitly.
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()
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.
Since 2.8
gtk_menu_shell_get_selected_item ()
GtkWidget *
gtk_menu_shell_get_selected_item (GtkMenuShell *menu_shell
);
Gets the currently selected item.
Since 3.0
gtk_menu_shell_get_parent_shell ()
GtkWidget *
gtk_menu_shell_get_parent_shell (GtkMenuShell *menu_shell
);
Gets the parent menu shell.
The parent menu shell of a submenu is the GtkMenu or GtkMenuBar from which it was opened up.
Since 3.0
gtk_menu_shell_bind_model ()
void gtk_menu_shell_bind_model (GtkMenuShell *menu_shell
,GMenuModel *model
,const gchar *action_namespace
,gboolean with_separators
);
Establishes a binding between a GtkMenuShell and a GMenuModel.
The contents of shell
are removed and then refilled with menu items
according to model
. When model
changes, shell
is updated.
Calling this function twice on shell
with different model
will
cause the first binding to be replaced with a binding to the new
model. If model
is NULL
then any previous binding is undone and
all children are removed.
with_separators
determines if toplevel items (eg: sections) have
separators inserted between them. This is typically desired for
menus but doesn’t make sense for menubars.
If action_namespace
is non-NULL
then the effect is as if all
actions mentioned in the model
have their names prefixed with the
namespace, plus a dot. For example, if the action “quit” is
mentioned and action_namespace
is “app” then the effective action
name is “app.quit”.
This function uses GtkActionable to define the action name and
target values on the created menu items. If you want to use an
action group other than “app” and “win”, or if you want to use a
GtkMenuShell outside of a GtkApplicationWindow, then you will need
to attach your own action group to the widget hierarchy using
gtk_widget_insert_action_group()
. As an example, if you created a
group with a “quit” action and inserted it with the name “mygroup”
then you would use the action name “mygroup.quit” in your
GMenuModel.
For most cases you are probably better off using
gtk_menu_new_from_model()
or gtk_menu_bar_new_from_model()
or just
directly passing the GMenuModel to gtk_application_set_app_menu()
or
gtk_application_set_menubar()
.
Parameters
menu_shell |
||
model |
the GMenuModel to bind to or |
[allow-none] |
action_namespace |
the namespace for actions in |
[allow-none] |
with_separators |
|
Since 3.6
Property Details
The “take-focus”
property
“take-focus” gboolean
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()
.
Flags: Read / Write
Default value: TRUE
Since 2.8
Signal Details
The “activate-current”
signal
void user_function (GtkMenuShell *menushell, gboolean force_hide, gpointer user_data)
An action signal that activates the current menu item within the menu shell.
Parameters
menushell |
the object which received the signal |
|
force_hide |
if |
|
user_data |
user data set when the signal handler was connected. |
Flags: Action
The “cancel”
signal
void user_function (GtkMenuShell *menushell, gpointer user_data)
An action signal which cancels the selection within the menu shell. Causes the “selection-done” signal to be emitted.
Parameters
menushell |
the object which received the signal |
|
user_data |
user data set when the signal handler was connected. |
Flags: Action
The “cycle-focus”
signal
void user_function (GtkMenuShell *menushell, GtkDirectionType direction, gpointer user_data)
A keybinding signal which moves the focus in the
given direction
.
Parameters
menushell |
the object which received the signal |
|
direction |
the direction to cycle in |
|
user_data |
user data set when the signal handler was connected. |
Flags: Action
The “deactivate”
signal
void user_function (GtkMenuShell *menushell, gpointer user_data)
This signal is emitted when a menu shell is deactivated.
Parameters
menushell |
the object which received the signal |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run First
The “insert”
signal
void user_function (GtkMenuShell *menu_shell, GtkWidget *child, gint position, gpointer user_data)
The ::insert signal is emitted when a new GtkMenuItem is added to a GtkMenuShell. A separate signal is used instead of GtkContainer::add because of the need for an additional position parameter.
The inverse of this signal is the GtkContainer::removed signal.
Parameters
menu_shell |
the object on which the signal is emitted |
|
child |
the GtkMenuItem that is being inserted |
|
position |
the position at which the insert occurs |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run First
Since 3.2
The “move-current”
signal
void user_function (GtkMenuShell *menushell, GtkMenuDirectionType direction, gpointer user_data)
An keybinding signal which moves the current menu item
in the direction specified by direction
.
Parameters
menushell |
the object which received the signal |
|
direction |
the direction to move |
|
user_data |
user data set when the signal handler was connected. |
Flags: Action
The “move-selected”
signal
gboolean user_function (GtkMenuShell *menu_shell, gint distance, gpointer user_data)
The ::move-selected signal is emitted to move the selection to another item.
Parameters
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. |
Flags: Run Last
Since 2.12
The “selection-done”
signal
void user_function (GtkMenuShell *menushell, gpointer user_data)
This signal is emitted when a selection has been completed within a menu shell.
Parameters
menushell |
the object which received the signal |
|
user_data |
user data set when the signal handler was connected. |
Flags: Run First