pub unsafe extern "C" fn XtGetSelectionValue(
    _6: Widget,
    _5: c_ulong,
    _4: c_ulong,
    _3: Option<unsafe extern "C" fn(_: Widget, _: *mut c_void, _: *mut c_ulong, _: *mut c_ulong, _: *mut c_void, _: *mut c_ulong, _: *mut c_int)>,
    _2: *mut c_void,
    _1: c_ulong
)