invalid cast from 'GnomeCanvasGroup' to 'GtkWidget'

[George Deprez]

Hello all,

    I am trying to delete my canvas item.

    I use,

        static gint
        pe_state_event_item ( GnomeCanvasItem *item, event, ueserdata){
            GtkWidget*     PTree = NULL;
            ...
             2button press:
               ...
                    PTree = lookup_widget ( GTK_WIDGET ( item ) ,
"PTree" );

or
                    PTree = lookup_widget (
GTK_WIDGET (GNOME_CANVAS_GROUP( item )) , "PTree" );

or
                    PTree = lookup_widget ( GTK_OBJECT ( item ) ,
"PTree" );

or
                    PTree = lookup_widget (  item  , "PTree" );

        }

       I get,

            invalid cast from 'GnomeCanvasGroup' to 'GtkWidget'

    Does lookup_widget worki  with Gnome?

    Any ideas about how I can get my tree are appreciated.

Thanks,
George


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