Problem with icon_view auto dnd (gtk 2.8)

[DaveMDS <list gurumeditation it>]

Hi ,
I have a problem using the IconView auto-dnd 
(gtk_icon_view_enable_model_drag_source) and the item-activated signal.

On item-activate I show a dialog to the user, when the dialog is closed 
the IconView start a drag operation incorrectly.

This is the complete code (is this a bug? or I made something Wrong?)
-----------------------------------------------------------------------------------------------------------
#include <gtk/gtk.h>

enum
{
 COL_TEXT,
 COL_PIXBUF,
 NUM_COLS
};
static GtkTargetEntry targets[] =
   {
     { "text/uri-list", 0, 0 },
   };

GtkWidget         *window = NULL;
GtkWidget         *icon_view;
GtkListStore     *store;

static void
fill_store (GtkListStore *store)
{
 GtkTreeIter iter;
 GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file ("test.png", NULL);

 /* First clear the store */
 gtk_list_store_clear (store);
  
 gtk_list_store_append (store, &iter);
 gtk_list_store_set (store, &iter, COL_TEXT, "test",COL_PIXBUF,pixbuf, -1);
}

static void        
on_item_activated            (GtkIconView *iconview,GtkTreePath 
*arg1,gpointer user_data){
   GtkWidget *dialog;
   g_print("ACTIVATed\n");
   dialog = gtk_dialog_new_with_buttons("TEST",
                                       GTK_WINDOW(window),
                                       GTK_DIALOG_MODAL | 
GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_NO_SEPARATOR,
                                       GTK_STOCK_CLOSE,GTK_RESPONSE_YES,
                                       NULL);
   gtk_dialog_run(GTK_DIALOG(dialog));
   gtk_widget_destroy (dialog);
}

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

   gtk_init (&argc, &argv);
  
   //window   
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_window_set_default_size (GTK_WINDOW (window), 650, 400);
   gtk_window_set_title (GTK_WINDOW (window), "GtkIconView demo");
   g_signal_connect (window, "destroy",G_CALLBACK 
(gtk_widget_destroyed), &window);
  
   //store
   store = gtk_list_store_new (NUM_COLS, G_TYPE_STRING, GDK_TYPE_PIXBUF);
   fill_store (store);
 
   //icon_view
   icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (store));
   gtk_icon_view_set_text_column (GTK_ICON_VIEW (icon_view), COL_TEXT);
   gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (icon_view), COL_PIXBUF);
   /* enable icon view auto D'n'D */
   
gtk_icon_view_enable_model_drag_source(GTK_ICON_VIEW(icon_view),GDK_BUTTON1_MASK,targets,1,GDK_ACTION_COPY);
   
gtk_icon_view_enable_model_drag_dest(GTK_ICON_VIEW(icon_view),targets,1, 
GDK_ACTION_COPY);
   gtk_signal_connect (GTK_OBJECT (icon_view), "item-activated", 
GTK_SIGNAL_FUNC (on_item_activated),NULL);

   gtk_container_add (GTK_CONTAINER (window), icon_view);
    
   gtk_widget_show_all (window);
   gtk_main();
   return 0;
}
----------------------

Really thanks!
Dave Andreoli