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  "title" : "nextEvent(matching:until:inMode:dequeue:)"
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# nextEvent(matching:until:inMode:dequeue:)

Forwards the message to the global application object.

```
func nextEvent(matching mask: NSEvent.EventTypeMask, until expiration: Date?, inMode mode: RunLoop.Mode, dequeue deqFlag: Bool) -> NSEvent?
```

## Parameters

`mask`

The mask that the event to return must match.

`expiration`

The date until which to wait for events.

`mode`

The run loop mode to use while waiting for events

`deqFlag`

<doc://com.apple.documentation/documentation/Swift/true> to remove the returned event from the event queue; <doc://com.apple.documentation/documentation/Swift/false> to leave the returned event in the queue.

## Return Value

The next event whose mask matches the specified `mask`; otherwise, `nil`.

## See Also

[`nextEvent(matching:until:inMode:dequeue:)`](/documentation/AppKit/NSApplication/nextEvent(matching:until:inMode:dequeue:))

Returns the next event matching a given mask, or `nil` if no such event is found before a specified expiration date.


---

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