GtkPlug Toplevel for embedding into other processes. Together with #GtkSocket, #GtkPlug provides the ability to embed widgets from one process into another process in a fashion that is transparent to the user. One process creates a #GtkSocket widget and, passes the ID of that widgets window to the other process, which then creates a #GtkPlug with that window ID. Any widgets contained in the #GtkPlug then will appear inside the first applications window. #GtkSocket the widget that a #GtkPlug plugs into. Finishes the creation of a #GtkPlug widget. This function will generally only be used by classes deriving from #GtkPlug. @plug: a #GtkPlug widget. @socket_id: the window ID of the socket. Creates a new plug widget inside the #GtkSocket identified by @socket_id. If @socket_id is 0, the plug is left "unplugged" and can later be plugged into a #GtkSocket by gtk_socket_add_id(). @socket_id: the window ID of the socket, or 0. @Returns: the new #GtkPlug widget. @plug: @Returns: @plug: the object which received the signal.