Function xcb::ffi::xproto::xcb_set_input_focus_checked

pub unsafe extern "C" fn xcb_set_input_focus_checked(
    c: *mut xcb_connection_t, 
    revert_to: u8, 
    focus: xcb_window_t, 
    time: xcb_timestamp_t
) -> xcb_void_cookie_t

Sets input focus

Changes the input focus and the last-focus-change time. If the specified time is earlier than the current last-focus-change time, the request is ignored (to avoid race conditions when running X over the network).

A FocusIn and FocusOut event is generated when focus is changed.