Function gdkx11::functions::x11_set_sm_client_id

pub fn x11_set_sm_client_id(sm_client_id: Option<&str>)

Sets the SM_CLIENT_ID property on the application’s leader window so that the window manager can save the application’s state using the X11R6 ICCCM session management protocol.

See the X Session Management Library documentation for more information on session management and the Inter-Client Communication Conventions Manual

sm_client_id

the client id assigned by the session manager when the connection was opened, or None to remove the property.