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Cancel event when CGEventTap callback returns nullptr #665

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12 changes: 7 additions & 5 deletions core-graphics/src/event.rs
Original file line number Diff line number Diff line change
Expand Up @@ -432,11 +432,13 @@ unsafe extern "C" fn cg_event_tap_callback_internal(
let callback = _user_info as *mut CGEventTapCallBackFn;
let event = CGEvent::from_ptr(_event);
let new_event = (*callback)(_proxy, _etype, &event);
let event = match new_event {
Some(new_event) => new_event,
None => event,
};
ManuallyDrop::new(event).as_ptr()
match new_event {
Some(new_event) => ManuallyDrop::new(new_event).as_ptr(),
None => {
std::mem::forget(event);
std::ptr::null_mut() as crate::sys::CGEventRef
}
}
}

/// ```no_run
Expand Down