Function xcb::ffi::xproto::xcb_ungrab_pointer_checked

pub unsafe extern "C" fn xcb_ungrab_pointer_checked(
    c: *mut xcb_connection_t, 
    time: xcb_timestamp_t
) -> xcb_void_cookie_t

release the pointer

Releases the pointer and any queued events if you actively grabbed the pointer before using xcb_grab_pointer, xcb_grab_button or within a normal button press.

EnterNotify and LeaveNotify events are generated.