problem with gtk_signal_connect_object

[Stefan Wille <wille netlife de>]

Hello,

I have a problem with gtk_signal_connect_object which might be bug:

>From what I understand, the function gtk_signal_connect_object connects 
a signal of one object to a method of another. If the second objects 
gets destroyed, its method shouldn't be called anymore, since a method 
should never be invoked on a destroyed object.

But this happens in my program, causing seg faults. It seems like
gtk doesn't disconnect connections to an object that gets destroyed.

I have made a test program:


#include <gtk/gtk.h>

gint some_method (GtkWidget *receiver,
                  GtkWidget *sender,
                  GdkEvent *event)
{
  printf ("** method on object %p should never be called, since it is
allready destroyed **\n", receiver);

  return TRUE;
}


int main (int argc, char **argv)
{
  GtkWidget *sender, *receiver;


  gtk_init (&argc, &argv);

  sender = gtk_window_new (GTK_TOPLEVEL);
  gtk_widget_set_events (sender,
                         gtk_widget_get_events (sender) |
                         GDK_BUTTON_PRESS_MASK);

  receiver = gtk_button_new ();

  gtk_signal_connect_object (GTK_OBJECT(sender), "button_press_event",
                             GTK_SIGNAL_FUNC(some_method),
GTK_OBJECT(receiver));

  gtk_widget_destroy (receiver);
  printf ("destroyed object %p\n", receiver);

  gtk_signal_emit_by_name (GTK_OBJECT(sender), "button_press_event",
NULL);

  gtk_exit (0);
  return 0;
}


It would be nice if you could help me with this.

Stefan