LinuxQuestions.org - GTK-Critical error compiling a smart program (with menu)

Hi
First time sorry for my english is not soo good, i try to compile the next source :

Code:

#include <gtk/gtk.h>

#include <glib.h>



gint destroyapp (GtkWidget *widget, gpointer gdata)

{

 gtk_main_quit();

 return (FALSE);

}

/*------------------------------------------------------------------*/

gint ClosingAppWindow (GtkWidget *widget, gpointer gdata)

{

gtk_main_quit();

 return (FALSE);

}

/*------------------------------------------------------------------*/

/*------------------------------------------------------------------*/

int main (int argc, char *argv[])

{

 GtkWidget *window;

 GtkWidget *vbox;

 GtkWidget *menuFile = NULL;

 GtkWidget *menubar = NULL;

 GtkWidget *menu = NULL;

 GtkWidget *menuitem = NULL;



 gtk_init (&argc, &argv);

 window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

 gtk_signal_connect(GTK_OBJECT(window),"delete_event",GTK_SIGNAL_FUNC(destroyapp), NULL);

 vbox = gtk_vbox_new(FALSE,0);

 

 gtk_container_add(GTK_CONTAINER(window), vbox);

 gtk_window_set_default_size (GTK_WINDOW(window), 640, 200);



 /*FILE MENU*/

 menuFile = gtk_menu_item_new_with_label("File");

 gtk_menu_bar_append (GTK_MENU_BAR(menubar), menuFile);

 menu= gtk_menu_new();

 gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuFile), menu);

 /*FILE MENU*/





 gtk_widget_show (vbox);

 gtk_widget_show (menu);

 gtk_widget_show (menuitem);

 gtk_widget_show (menubar);

 gtk_widget_show (window);

 gtk_widget_show(menuFile);



 gtk_main();

 return 0;

}

with commands:
g++ -Wall -g -c fdialog.c -export-dynamic `pkg-config --cflags --libs gtk+-2.0` `gtk-config --cflags` `gtk-config --libs`

g++ -o fdialog fdialog.o `pkg-config --cflags --libs gtk+-2.0` `gtk-config --cflags` `gtk-config --libs`

and it compile without errors, but when i try to run it, it can be run without menubar, and become this error message:

(fdialog:6369): Gtk-CRITICAL **: gtk_menu_shell_insert: assertion `GTK_IS_MENU_SHELL (menu_shell)' failed

(fdialog:6369): Gtk-CRITICAL **: gtk_widget_show: assertion `GTK_IS_WIDGET (widget)' failed

(fdialog:6369): Gtk-CRITICAL **: gtk_widget_show: assertion `GTK_IS_WIDGET (widget)' failed

is this a bug ? or how can i resolve this problem? maybe someone had the same problem.

Thanks for your help !
Robert