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# doCommandBySelector:

Invokes the given selector if possible.

```
- (void) doCommandBySelector:(SEL) selector;
```

## Parameters

`selector`

The selector to be invoked.

## Discussion

If `selector` cannot be invoked, then [`doCommandBySelector:`](/documentation/AppKit/NSTextInput/doCommandBySelector:) should not pass this message up the responder chain. `NSResponder` also implements this method, and it does forward uninvokable commands up the responder chain, but a text view should not. A text view implementing the [`NSTextInput`](/documentation/AppKit/NSTextInput) protocol inherits from `NSView`, which inherits from `NSResponder`, so your implementation of this method will override the one in `NSResponder`. It should not call `super`.

## See Also

[`func interpretKeyEvents([NSEvent])`](/documentation/AppKit/NSResponder/interpretKeyEvents(_:))

Handles a series of key events.


---

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