#include <stdio.h>#include <gtk/gtk.h>static gboolean button_press (GtkWidget *, GdkEvent *);static void menuitem_response (gchar *);int main( int   argc,          char *argv[] ){    GtkWidget *window;    GtkWidget *menu;    GtkWidget *menu_bar;    GtkWidget *root_menu;    GtkWidget *menu_items;    GtkWidget *vbox;    GtkWidget *button;    char buf[128];    int i;    gtk_init (&argc, &argv);    /* create a new window */    window = gtk_window_new (GTK_WINDOW_TOPLEVEL);    gtk_widget_set_size_request (GTK_WIDGET (window), 200, 100);    gtk_window_set_title (GTK_WINDOW (window), "GTK Menu Test");    g_signal_connect (window, "delete-event",                      G_CALLBACK (gtk_main_quit), NULL);    /* Init the menu-widget, and remember -- never     * gtk_show_widget() the menu widget!!     * This is the menu that holds the menu items, the one that     * will pop up when you click on the "Root Menu" in the app */    menu = gtk_menu_new ();    /* Next we make a little loop that makes three menu-entries for "test-menu".     * Notice the call to gtk_menu_shell_append.  Here we are adding a list of     * menu items to our menu.  Normally, we'd also catch the "clicked"     * signal on each of the menu items and setup a callback for it,     * but it's omitted here to save space. */    for (i = 0; i < 3; i++)        {            /* Copy the names to the buf. */            sprintf (buf, "Test-undermenu - %d", i);            /* Create a new menu-item with a name... */            menu_items = gtk_menu_item_new_with_label (buf);            /* ...and add it to the menu. */            gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_items);	    /* Do something interesting when the menuitem is selected */	    g_signal_connect_swapped (menu_items, "activate",		                      G_CALLBACK (menuitem_response),                                      (gpointer) g_strdup (buf));            /* Show the widget */            gtk_widget_show (menu_items);        }    /* This is the root menu, and will be the label     * displayed on the menu bar.  There won't be a signal handler attached,     * as it only pops up the rest of the menu when pressed. */    root_menu = gtk_menu_item_new_with_label ("Root Menu");    gtk_widget_show (root_menu);    /* Now we specify that we want our newly created "menu" to be the menu     * for the "root menu" */    gtk_menu_item_set_submenu (GTK_MENU_ITEM (root_menu), menu);    /* A vbox to put a menu and a button in: */    vbox = gtk_vbox_new (FALSE, 0);    gtk_container_add (GTK_CONTAINER (window), vbox);    gtk_widget_show (vbox);    /* Create a menu-bar to hold the menus and add it to our main window */    menu_bar = gtk_menu_bar_new ();    gtk_box_pack_start (GTK_BOX (vbox), menu_bar, FALSE, FALSE, 2);    gtk_widget_show (menu_bar);    /* Create a button to which to attach menu as a popup */    button = gtk_button_new_with_label ("press me");    g_signal_connect_swapped (button, "event",	                      G_CALLBACK (button_press),                              menu);    gtk_box_pack_end (GTK_BOX (vbox), button, TRUE, TRUE, 2);    gtk_widget_show (button);    /* And finally we append the menu-item to the menu-bar -- this is the     * "root" menu-item I have been raving about =) */    gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), root_menu);    /* always display the window as the last step so it all splashes on     * the screen at once. */    gtk_widget_show (window);    gtk_main ();    return 0;}/* Respond to a button-press by posting a menu passed in as widget. * * Note that the "widget" argument is the menu being posted, NOT * the button that was pressed. */static gboolean button_press( GtkWidget *widget,                              GdkEvent *event ){    if (event->type == GDK_BUTTON_PRESS) {        GdkEventButton *bevent = (GdkEventButton *) event;        gtk_menu_popup (GTK_MENU (widget), NULL, NULL, NULL, NULL,                        bevent->button, bevent->time);        /* Tell calling code that we have handled this event; the buck         * stops here. */        return TRUE;    }    /* Tell calling code that we have not handled this event; pass it on. */    return FALSE;}/* Print a string when a menu item is selected */static void menuitem_response( gchar *string ){    printf ("%s\n", string);}