gtk/examples/menu/itemfactory.c

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/* example-start menu itemfactory.c */
#include <gtk/gtk.h>
#include <strings.h>
/* Obligatory basic callback */
static void print_hello(GtkWidget *w, gpointer data) {
g_message("Hello, World!\n");
}
/* This is the GtkItemFactoryEntry structure used to generate new menus.
Item 1: The menu path. The letter after the underscore indicates an
accelerator key once the menu is open.
Item 2: The accelerator key for the entry
Item 3: The callback function.
Item 4: The callback action. This changes the parameters with
which the function is called. The default is 0.
Item 5: The item type, used to define what kind of an item it is.
Here are the possible values:
NULL -> "<Item>"
"" -> "<Item>"
"<Title>" -> create a title item
"<Item>" -> create a simple item
"<CheckItem>" -> create a check item
"<ToggleItem>" -> create a toggle item
"<RadioItem>" -> create a radio item
<path> -> path of a radio item to link against
"<Separator>" -> create a separator
"<Branch>" -> create an item to hold sub items
"<LastBranch>" -> create a right justified branch
*/
static GtkItemFactoryEntry menu_items[] = {
{"/_File", NULL, NULL, 0, "<Branch>"},
{"/File/_New", "<control>N", print_hello, 0, NULL},
{"/File/_Open", "<control>O", print_hello, 0, NULL},
{"/File/_Save", "<control>S", print_hello, 0, NULL},
{"/File/Save _As", NULL, NULL, 0, NULL},
{"/File/sep1", NULL, NULL, 0, "<Separator>"},
{"/File/Quit", "<control>Q", gtk_main_quit, 0, NULL},
{"/_Options", NULL, NULL, 0, "<Branch>"},
{"/Options/Test", NULL, NULL, 0, NULL},
{"/_Help", NULL, NULL, 0, "<LastBranch>"},
{"/_Help/About", NULL, NULL, 0, NULL},
};
void get_main_menu(GtkWidget *window, GtkWidget ** menubar) {
int nmenu_items = sizeof(menu_items) / sizeof(menu_items[0]);
GtkItemFactory *item_factory;
GtkAccelGroup *accel_group;
accel_group = gtk_accel_group_new();
/* This function initializes the item factory.
Param 1: The type of menu - can be GTK_TYPE_MENU_BAR, GTK_TYPE_MENU,
or GTK_TYPE_OPTION_MENU.
Param 2: The path of the menu.
Param 3: A pointer to a gtk_accel_group. The item factory sets up
the accelerator table while generating menus.
*/
item_factory = gtk_item_factory_new(GTK_TYPE_MENU_BAR, "<main>",
accel_group);
/* This function generates the menu items. Pass the item factory,
the number of items in the array, the array itself, and any
callback data for the the menu items. */
gtk_item_factory_create_items(item_factory, nmenu_items, menu_items, NULL);
/* Attach the new accelerator group to the window. */
gtk_accel_group_attach (accel_group, GTK_OBJECT (window));
if (menubar)
/* Finally, return the actual menu bar created by the item factory. */
*menubar = gtk_item_factory_get_widget(item_factory, "<main>");
}
int main(int argc, char *argv[]) {
GtkWidget *window;
GtkWidget *main_vbox;
GtkWidget *menubar;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_signal_connect(GTK_OBJECT(window), "destroy",
GTK_SIGNAL_FUNC(gtk_main_quit),
"WM destroy");
gtk_window_set_title(GTK_WINDOW(window), "Item Factory");
gtk_widget_set_usize(GTK_WIDGET(window), 300, 200);
main_vbox = gtk_vbox_new(FALSE, 1);
gtk_container_border_width(GTK_CONTAINER(main_vbox), 1);
gtk_container_add(GTK_CONTAINER(window), main_vbox);
gtk_widget_show(main_vbox);
get_main_menu(window, &menubar);
gtk_box_pack_start(GTK_BOX(main_vbox), menubar, FALSE, TRUE, 0);
gtk_widget_show(menubar);
gtk_widget_show(window);
gtk_main();
return(0);
}
/* example-end */