Hello, As requested, I will try to � illuminate � this callback connection topic :
1/ Generally (but pending on considered signal), callback functions prototype is fnct_callback (GtkObject *object, gpointer data) 2/ gtk_signal_connect (GtkObject *object, const gchar *signal_name, GtkSignalFunc fnct_callback, gpointer data) allows you to run a callback function as described above, once the specified signal is emitted (eg. a mouse click) : - the GtkObject address transmitted to the callback function is the widget which emits the signal (eg. the button to click) - the gpointer data allows data transmission to the callback function (eg. an array to be displayed, ...) 3/ gtk_signal_connect_object (GtkObject *object, const gchar *signal_name, GtkSignalFunc fnct_callback, GtkObject *target) allows you to run a callback function once the specified signal is emitted (eg. a mouse click). In that case, the GtkObject address transmitted to the callback function is the object you've specified as target Example : ------- Imagine you wish to destroy a window (called � dialog �) once the button � button_destroy � is clicked, using the � gtk_widget_destroy � standard gtk function as callback function : - gtk_signal_connect (GTK_OBJECT(button_destroy), � clicked �, (GtkSignalFunc)gtk_widget_destroy, NULL) will result in the � button_destroy � widget destruction instead of the window, because the pointer to � button_destroy � is transmitted to � gtk_widget_destroy � function - gtk_signal_connect_object (GTK_OBJECT(button_destroy), � clicked �, (GtkSignalFunc) gtk_widget_destroy, GTK_OBJECT(dialog)) is the correct way to act : destruction of the � dialog � window, because the pointer to � dialog � is transmitted to � gtk_widget_destroy � function Am I clear ? _______________________________________________ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
