Re: Toolbar/Toolbox or something other...

[Andreas Volz <andreas brachttal net>]

Am Thu, 21 Nov 2002 13:55:16 -0500
Tristan Van Berkom <vantr touchtunes com> schrieb:

> void g_object_set_data(GObject *obj, gchar *name, gpointer data);
> gpointer g_object_get_data(GObject *obj, gchar *name);

Hi,

I tried all, but it didn't work :-(

Has anyone an example for using this? In the gtk-faq is only this:

| struct my_struct      p1,p2,*result;
| GtkWidget             *w;
| 
| gtk_object_set_data(GTK_OBJECT(w),"p1 data",(gpointer)&p1);
| gtk_object_set_data(GTK_OBJECT(w),"p2 data",(gpointer)&p2);
| 
| result = gtk_object_get_data(GTK_OBJECT(w),"p1 data");

I'll show you what I tried:

int main (blabla)
{
  /* some lines cut... */
  GtkWidget *button;
  int test = 99;

  /* button - run */
  button = gtk_button_new_from_stock (GTK_STOCK_EXECUTE);
  g_signal_connect (G_OBJECT (button), "clicked",
                    G_CALLBACK (run), (gpointer) entry);

  gtk_box_pack_start(GTK_BOX (box2), button, TRUE, TRUE, 5);
  
  g_object_set_data (G_OBJECT (button), "test", (gpointer) &test);
  result = (int*) g_object_get_data (G_OBJECT (button), "test");

  g_print ("result: %d\n", *result);                       /* this works
*/
  
  gtk_widget_show (button);
}

void run (GtkWidget *button, gpointer entry)
{
  int *result;
  result = (int*) g_object_get_data (G_OBJECT (button), "test");
  g_print ("result: %d\n", *result);          /* here: Segmentation
Fault */

  /* some lines cut */
}

I doesn't understand it. Perhaps it's only a silly pointer bug ;-)

Andreas