Here is an example using the GTK item factory.
#include <gtk/gtk.h>
/* Obligatory basic callback */
static void print_hello( GtkWidget *w,
gpointer data )
{
g_message ("Hello, World!\n");
}
/* For the check button */
static void print_toggle( gpointer callback_data,
guint callback_action,
GtkWidget *menu_item )
{
g_message ("Check button state - %d\n",
GTK_CHECK_MENU_ITEM (menu_item)->active);
}
/* For the radio buttons */
static void print_selected( gpointer callback_data,
guint callback_action,
GtkWidget *menu_item )
{
if(GTK_CHECK_MENU_ITEM(menu_item)->active)
g_message ("Radio button %d selected\n", callback_action);
}
/* Our menu, an array of GtkItemFactoryEntry structures that defines each menu item */
static GtkItemFactoryEntry menu_items[] = {
{ "/_File", NULL, NULL, 0, "<Branch>" },
{ "/File/_New", "<control>N", print_hello, 0, "<StockItem>", GTK_STOCK_NEW },
{ "/File/_Open", "<control>O", print_hello, 0, "<StockItem>", GTK_STOCK_OPEN },
{ "/File/_Save", "<control>S", print_hello, 0, "<StockItem>", GTK_STOCK_SAVE },
{ "/File/Save _As", NULL, NULL, 0, "<Item>" },
{ "/File/sep1", NULL, NULL, 0, "<Separator>" },
{ "/File/_Quit", "<CTRL>Q", gtk_main_quit, 0, "<StockItem>", GTK_STOCK_QUIT },
{ "/_Options", NULL, NULL, 0, "<Branch>" },
{ "/Options/tear", NULL, NULL, 0, "<Tearoff>" },
{ "/Options/Check", NULL, print_toggle, 1, "<CheckItem>" },
{ "/Options/sep", NULL, NULL, 0, "<Separator>" },
{ "/Options/Rad1", NULL, print_selected, 1, "<RadioItem>" },
{ "/Options/Rad2", NULL, print_selected, 2, "/Options/Rad1" },
{ "/Options/Rad3", NULL, print_selected, 3, "/Options/Rad1" },
{ "/_Help", NULL, NULL, 0, "<LastBranch>" },
{ "/_Help/About", NULL, NULL, 0, "<Item>" },
};
static gint nmenu_items = sizeof (menu_items) / sizeof (menu_items[0]);
/* Returns a menubar widget made from the above menu */
static GtkWidget *get_menubar_menu( GtkWidget *window )
{
GtkItemFactory *item_factory;
GtkAccelGroup *accel_group;
/* Make an accelerator group (shortcut keys) */
accel_group = gtk_accel_group_new ();
/* Make an ItemFactory (that makes a menubar) */
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_window_add_accel_group (GTK_WINDOW (window), accel_group);
/* Finally, return the actual menu bar created by the item factory. */
return gtk_item_factory_get_widget (item_factory, "<main>");
}
/* Popup the menu when the popup button is pressed */
static gboolean popup_cb( GtkWidget *widget,
GdkEvent *event,
GtkWidget *menu )
{
GdkEventButton *bevent = (GdkEventButton *)event;
/* Only take button presses */
if (event->type != GDK_BUTTON_PRESS)
return FALSE;
/* Show the menu */
gtk_menu_popup (GTK_MENU(menu), NULL, NULL,
NULL, NULL, bevent->button, bevent->time);
return TRUE;
}
/* Same as with get_menubar_menu() but just return a button with a signal to
call a popup menu */
GtkWidget *get_popup_menu( void )
{
GtkItemFactory *item_factory;
GtkWidget *button, *menu;
/* Same as before but don't bother with the accelerators */
item_factory = gtk_item_factory_new (GTK_TYPE_MENU, "<main>",
NULL);
gtk_item_factory_create_items (item_factory, nmenu_items, menu_items, NULL);
menu = gtk_item_factory_get_widget (item_factory, "<main>");
/* Make a button to activate the popup menu */
button = gtk_button_new_with_label ("Popup");
/* Make the menu popup when clicked */
g_signal_connect (G_OBJECT(button),
"event",
G_CALLBACK(popup_cb),
(gpointer) menu);
return button;
}
/* Same again but return an option menu */
GtkWidget *get_option_menu( void )
{
GtkItemFactory *item_factory;
GtkWidget *option_menu;
/* Same again, not bothering with the accelerators */
item_factory = gtk_item_factory_new (GTK_TYPE_OPTION_MENU, "<main>",
NULL);
gtk_item_factory_create_items (item_factory, nmenu_items, menu_items, NULL);
option_menu = gtk_item_factory_get_widget (item_factory, "<main>");
return option_menu;
}
/* You have to start somewhere */
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *main_vbox;
GtkWidget *menubar, *option_menu, *popup_button;
/* Initialize GTK */
gtk_init (&argc, &argv);
/* Make a window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (G_OBJECT (window), "destroy",
G_CALLBACK (gtk_main_quit),
NULL);
gtk_window_set_title (GTK_WINDOW(window), "Item Factory");
gtk_widget_set_size_request (GTK_WIDGET(window), 300, 200);
/* Make a vbox to put the three menus in */
main_vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 1);
gtk_container_add (GTK_CONTAINER (window), main_vbox);
/* Get the three types of menu */
/* Note: all three menus are separately created, so they are not the
same menu */
menubar = get_menubar_menu (window);
popup_button = get_popup_menu ();
option_menu = get_option_menu ();
/* Pack it all together */
gtk_box_pack_start (GTK_BOX (main_vbox), menubar, FALSE, TRUE, 0);
gtk_box_pack_end (GTK_BOX (main_vbox), popup_button, FALSE, TRUE, 0);
gtk_box_pack_end (GTK_BOX (main_vbox), option_menu, FALSE, TRUE, 0);
/* Show the widgets */
gtk_widget_show_all (window);
/* Finished! */
gtk_main ();
return 0;
}