GTK+ Forums

#include <gtk/gtk.h>

void create_menu (GtkWindow *window, GtkContainer *container)
{
   // Inizializzazione widget
   GtkWidget *vbox, *hbox, *menubar;

   GtkWidget *filemenu, *filemenu2, *filemenu3;
   
   GtkWidget *file, *settings, *help;
     
   GtkWidget *open, *save_as, *close, *quit, *sep;
   
   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
   gtk_container_add (GTK_CONTAINER (window), vbox);
     
   menubar = gtk_menu_bar_new ();
   gtk_box_pack_start (GTK_BOX (vbox), menubar, FALSE, FALSE, 0);

   GtkWidget *button = gtk_button_new_with_label ("CIAO");
   gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
   gtk_widget_set_halign (button, GTK_ALIGN_END);
   gtk_widget_set_valign (button, GTK_ALIGN_END);

   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
   gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);

   filemenu = gtk_menu_new ();
   
   GtkAccelGroup *accel_group = gtk_accel_group_new ();
   gtk_window_add_accel_group (GTK_WINDOW (window), accel_group);
     
   file = gtk_menu_item_new_with_mnemonic ("File");
   gtk_menu_shell_append (GTK_MENU_SHELL (menubar), file);
   gtk_menu_item_set_submenu (GTK_MENU_ITEM (file), filemenu);
   
   settings = gtk_menu_item_new_with_mnemonic ("_Strumenti");
   gtk_menu_shell_append (GTK_MENU_SHELL (menubar), settings);
     
   help = gtk_menu_item_new_with_mnemonic ("_Aiuto");
   gtk_menu_shell_append (GTK_MENU_SHELL (menubar), help);
   
   open = gtk_image_menu_item_new_from_stock (GTK_STOCK_OPEN, accel_group);
   close = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLOSE, accel_group);
   save_as = gtk_image_menu_item_new_from_stock (GTK_STOCK_SAVE_AS, accel_group);
   sep = gtk_separator_menu_item_new ();
   quit = gtk_image_menu_item_new_from_stock (GTK_STOCK_QUIT, accel_group);
   
   // vengono aggiunti dei submenu
   gtk_menu_item_set_submenu (GTK_MENU_ITEM (file), filemenu);
   gtk_menu_shell_append (GTK_MENU_SHELL (filemenu), open);   
   gtk_menu_shell_append (GTK_MENU_SHELL (filemenu), close);
   gtk_menu_shell_append (GTK_MENU_SHELL (filemenu), save_as);
   // Inserimento separatore
   gtk_menu_shell_append (GTK_MENU_SHELL(filemenu), sep);
   gtk_menu_shell_append (GTK_MENU_SHELL (filemenu), quit);
}

int main (int argc, char *argv[])
{
   GtkWidget *window;   

   /* This is called in all GTK applications. Arguments are parsed
       * from the command line and are returned to the application.
    */
   gtk_init (&argc, &argv);

     /* create a new window, and set its title */
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_window_set_title (GTK_WINDOW (window), "c_Nav");
   gtk_window_set_default_size (GTK_WINDOW (window), 800, 450);
   gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
     //gtk_container_set_border_width (GTK_CONTAINER (window), 0);

   // Funzione per la creazione del menu
   create_menu (GTK_WINDOW (window), GTK_CONTAINER (window));
   g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL);

     /* Now that we are done packing our widgets, we show them all
       * in one go, by calling gtk_widget_show_all() on the window.
       * This call recursively calls gtk_widget_show() on all widgets
       * that are contained in the window, directly or indirectly.
       */
   gtk_widget_show_all (window);

     /* All GTK applications must have a gtk_main(). Control ends here
     * and waits for an event to occur (like a key press or a mouse event),
     * until gtk_main_quit() is called.
     */
   gtk_main ();

   return 0;
}

gcc `pkg-config -libs --cflags gtk+-3.0` t.cc

g++ -Wall -O3 `pkg-config --libs --cflags gtk+-2.0` file.cc

g++ -Wall -O3 `pkg-config --cflags gtk+-3.0` file.cc `pkg-config --libs gtk+-3.0`

gcc `pkg-config --libs --cflags gtk+-3.0` file.cc

tipo.cc:(.text+0x1b): undefined reference to `gtk_box_new'
tipo.cc:(.text+0x24): undefined reference to `gtk_container_get_type'
tipo.cc:(.text+0x36): undefined reference to `g_type_check_instance_cast'
tipo.cc:(.text+0x45): undefined reference to `gtk_container_add'
................