Only if the member function is static. Calling a non-static member function requires two addresses: the instance address and the function address. Whether its public or private doesn't matter because access to function pointers is not checked by compilers. I frequently do something like this: class SomeClass { ... private: ... static void staticCb(..., gpointer inInstance) { SomeClass* instance = (SomeClass*)inInstance; instance->callback(...); } void callback(...) { ... } ... void someFunc() { ... g_signal_connect(..., G_CALLBACK(&staticCb), this); ... } ... }; -Anthony Vallone -----Original Message----- From: gtk-list-bounces@xxxxxxxxx [mailto:gtk-list-bounces@xxxxxxxxx] On Behalf Of Marco Rocco Sent: Tuesday, July 15, 2008 6:04 AM To: gtk-list@xxxxxxxxx Subject: Using g_signal_connect in class Hello, this is my first post on this mailing list, now i do my request: can i use g_signal_connect in a method of my class, using as c_handler a private function of class? ...and if i can, how i can do ? _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list