Probleme d'affichage dans gtk

Bonjour à tous,

je viens vous demander de l'aide!

Je suis actuellement en train de faire une interface graphique (jusqu'à là rien de spécial :p) mais je n'arrive pas à afficher une série de boutons quand je clique sur "nouveau" de mon menu.

Je vous montre mon code qui vous seras utile pour m'aider:

Code:

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static GtkWidget *pWindow;
static GtkWidget *pVBox;
static GtkWidget *pVBox2;
 
int main(int argc, char **argv)
{
  gtk_init(&argc, &argv);
 
  pWindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_window_set_title(GTK_WINDOW(pWindow), "Timetable Producer");
  gtk_window_set_default_size(GTK_WINDOW(pWindow), 262, 350);
  g_signal_connect(G_OBJECT(pWindow), "destroy", 
		   G_CALLBACK(gtk_main_quit), NULL);
 
  pVBox = gtk_vbox_new(FALSE, 0);
  gtk_container_add(GTK_CONTAINER(pWindow), pVBox);
 
  CreateMenu();
 
  pVBox2 = gtk_vbox_new(TRUE, 0);
  gtk_box_pack_start(GTK_BOX(pVBox), pVBox2, TRUE, FALSE, 0);
 
 
  gtk_widget_show_all(pWindow);
 
  gtk_main();
 
  return EXIT_SUCCESS;
}
 
void CreateMenu()
{
  GtkWidget *pMenuBar;
  GtkWidget *pMenu;
  GtkWidget *pMenuItem;
 
  pMenuBar = gtk_menu_bar_new();
 
  pMenu = gtk_menu_new();
  pMenuItem = gtk_image_menu_item_new_from_stock(GTK_STOCK_NEW,NULL);
  g_signal_connect(G_OBJECT(pMenuItem), "activate", G_CALLBACK(CreateButton), 
		    (GtkWidget*) pVBox2);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_image_menu_item_new_from_stock(GTK_STOCK_OPEN,NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_image_menu_item_new_from_stock(GTK_STOCK_SAVE,NULL);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_separator_menu_item_new();
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_menu_item_new_with_label("Generer");
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_separator_menu_item_new();
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_image_menu_item_new_from_stock(GTK_STOCK_QUIT,NULL);
  g_signal_connect(G_OBJECT(pMenuItem), "activate", G_CALLBACK(OnQuitter), 
		   (GtkWidget*) pWindow);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
 
  pMenuItem = gtk_menu_item_new_with_label("Fichier");
  gtk_menu_item_set_submenu(GTK_MENU_ITEM(pMenuItem), pMenu);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenuBar), pMenuItem);
 
  pMenu = gtk_menu_new();
  pMenuItem = gtk_menu_item_new_with_label("A propos de...");
  g_signal_connect(G_OBJECT(pMenuItem), "activate", G_CALLBACK(OnAbout),
		   (GtkWidget*) pWindow);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenu), pMenuItem);
  pMenuItem = gtk_menu_item_new_with_label("?");
  gtk_menu_item_set_submenu(GTK_MENU_ITEM(pMenuItem), pMenu);
  gtk_menu_shell_append(GTK_MENU_SHELL(pMenuBar), pMenuItem);
 
  gtk_box_pack_start(GTK_BOX(pVBox), pMenuBar, FALSE, FALSE, 0);
}
 
void CreateButton(GtkWidget* widget, gpointer data)
{
  GtkWidget *pButton[6];
 
  pButton[0] = gtk_button_new_with_label("Jours");
  gtk_box_pack_start(GTK_BOX(data), pButton[0], TRUE, FALSE, 0);
}

de ma fonction CreateButton

Merci à tous ceux qui m'aideront