Hi all,
I am trying to use toggle reference, but when I remove toggle refence
from GtkWindow I get those errors:
(<unknown>:7228): GLib-GObject-WARNING **: instance with invalid (NULL)
class pointer
(<unknown>:7228): GLib-GObject-CRITICAL **: g_signal_handlers_destroy:
assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
(<unknown>:7228): GLib-GObject-WARNING **: instance with invalid (NULL)
class pointer
(<unknown>:7228): GLib-GObject-CRITICAL **: g_signal_handlers_destroy:
assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
I observe this behavior only on GtkWindow, other widgets are ok.
What do I wrong?
Thank you,
Stanislav Bohm
Demonstration code:
#include <gtk/gtk.h>
gboolean delete_event(GtkWidget *w, GdkEvent *event, gpointer data)
{
gtk_main_quit();
return TRUE;
}
void notify(gpointer g, GObject *obj, gboolean is_last)
{
}
void init(GObject *obj)
{
g_object_add_toggle_ref(obj,notify, NULL);
g_object_unref(obj);
}
void clean(GObject *obj)
{
printf("---> ref_count: %i\n ",obj->ref_count);
g_object_remove_toggle_ref(obj,notify, NULL);
printf("---> ref_count: %i\n ",obj->ref_count);
}
int main()
{
gtk_init(0, NULL);
GtkWidget *win = gtk_window_new(0);
init(G_OBJECT(win));
gtk_widget_show_all(win);
g_signal_connect(G_OBJECT(win),
"delete_event", G_CALLBACK(delete_event), NULL);
gtk_main();
clean(G_OBJECT(win));
return 0;
}
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