a startup-notification identifier, for which notification process should be completed Since 3.0 Signal Details The "closed" signal void user_function (GdkDisplay *display, gboolean is_error, gpointer user_data) : Run Last The ::closed signal is emitted when the connection to the windowing system for display is closed.
Indicates to the GUI environment that the application has finished loading, using a given identifier. GTK+ will call this function automatically for GtkWindow with custom startup-notification identifier unless gtk_window_set_auto_startup_notification() is called to disable that feature. Since 2.2