Function ungrab_key 

pub fn ungrab_key<Conn, A>(
    conn: &Conn,
    key: A,
    grab_window: Window,
    modifiers: ModMask,
) -> Result<VoidCookie<'_, Conn>, ConnectionError>
where
    Conn: RequestConnection + ?Sized,
    A: Into<Keycode>,

release a key combination.

Releases the key combination on grab_window if you grabbed it using xcb_grab_key before.

Fields

• key - The keycode of the specified key combination.

  Using the special value XCB_GRAB_ANY means releasing all possible key codes.

• grab_window - The window on which the grabbed key combination will be released.

• modifiers - The modifiers of the specified key combination.

  Using the special value XCB_MOD_MASK_ANY means releasing the key combination with every possible modifier combination.

Errors

• Window - The specified grab_window does not exist.
• Value - TODO: reasons?

See

• GrabKey: request
• xev: program