---
title: "discardEvents(matching:before:)"
framework: appkit
role: symbol
role_heading: Instance Method
path: "appkit/nswindow/discardevents(matching:before:)"
---

# discardEvents(matching:before:)

Forwards the message to the global application object.

## Declaration

```swift
func discardEvents(matching mask: NSEvent.EventTypeMask, before lastEvent: NSEvent?)
```

## Parameters

- `mask`: The mask of the events to discard.
- `lastEvent`: The event up to which queued events are discarded from the queue.

## See Also

### Handling Events

- [currentEvent](appkit/nswindow/currentevent.md)
- [nextEvent(matching:)](appkit/nswindow/nextevent(matching:).md)
- [nextEvent(matching:until:inMode:dequeue:)](appkit/nswindow/nextevent(matching:until:inmode:dequeue:).md)
- [postEvent(_:atStart:)](appkit/nswindow/postevent(_:atstart:).md)
- [sendEvent(_:)](appkit/nswindow/sendevent(_:).md)
- [tryToPerform(_:with:)](appkit/nswindow/trytoperform(_:with:).md)