GtkAccelLabel

Object Hierarchy

  GtkObject
   +----GtkWidget
         +----GtkMisc
               +----GtkLabel
                     +----GtkAccelLabel

Args

  "accel_widget"         GtkWidget            : Read / Write

Description

The GtkAccelLabel widget is a subclass of GtkLabel that also displays an accelerator key on the right of the label text, e.g. 'Ctl+S'. It is commonly used in menus to show the keyboard short-cuts for commands.

The accelerator key to display is not set explicitly. Instead, the GtkAccelLabel displays the accelerators which have been added to a particular widget. This widget is set by calling gtk_accel_label_set_accel_widget().

For example, a GtkMenuItem widget may have an accelerator added to emit the "activate" signal when the 'Ctl+S' key combination is pressed. A GtkAccelLabel is created and added to the GtkMenuItem, and gtk_accel_label_set_accel_widget() is called with the GtkMenuItem as the second argument. The GtkAccelLabel will now display 'Ctl+S' after its label.

Note that creating a GtkMenuItem with gtk_menu_item_new_with_label() (or one of the similar functions for GtkCheckMenuItem and GtkRadioMenuItem) automatically adds a GtkAccelLabel to the GtkMenuItem and calls gtk_accel_label_set_accel_widget() to set it up for you.

A GtkAccelLabel will only display accelerators which have GTK_ACCEL_VISIBLE set (see GtkAccelFlags). A GtkAccelLabel can display multiple accelerators and even signal names, though it is almost always used to display just one accelerator key.

  GtkWidget *save_item;
  GtkAccelGroup *accel_group;

  /* Create a GtkAccelGroup and add it to the window. */
  accel_group = gtk_accel_group_new();
  gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);

  /* Create the menu item using the convenience function. */
  save_item = gtk_menu_item_new_with_label ("Save");
  gtk_widget_show (save_item);
  gtk_container_add (GTK_CONTAINER (menu), save_item);

  /* Now add the accelerator to the GtkMenuItem. Note that since we called
     gtk_menu_item_new_with_label() to create the GtkMenuItem the
     GtkAccelLabel is automatically set up to display the GtkMenuItem
     accelerators. We just need to make sure we use GTK_ACCEL_VISIBLE here. */
  gtk_widget_add_accelerator (save_item, "activate", accel_group,
                              GDK_s, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE);

Details

struct GtkAccelLabel;

GtkWidget*  gtk_accel_label_new             (const gchar *string);

void        gtk_accel_label_set_accel_widget
                                            (GtkAccelLabel *accel_label,
                                             GtkWidget *accel_widget);

guint       gtk_accel_label_get_accel_width (GtkAccelLabel *accel_label);

gboolean    gtk_accel_label_refetch         (GtkAccelLabel *accel_label);

Args

See Also