### Class method

# Gtk.WidgetClass.set_activate_signal

#### Declaration [src]

    void
    gtk_widget_class_set_activate_signal (
      WidgetClass* self
    )

#### Description [src]

Sets the GtkWidgetClass.activate_signal field with the given `signal_id`; the signal will be emitted when calling `gtk_widget_activate()`.

The `signal_id` must have been registered with `g_signal_new()` or `g_signal_newv()` before calling this function.