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# controlTextDidChange:

Sent when the text in the receiving control changes.

```
- (void) controlTextDidChange:(NSNotification *) obj;
```

## Parameters

`obj`

The notification object. The name of the notification is always <doc://com.apple.documentation/documentation/AppKit/NSControl/textDidChangeNotification>.

## Discussion

This method is invoked when text in a control such as a text field or form changes. The control posts a <doc://com.apple.documentation/documentation/AppKit/NSControl/textDidChangeNotification> notification, and if the control’s delegate implements this method, it is automatically registered to receive the notification. Use the key `@"NSFieldEditor"` to obtain the field editor from the `userInfo` dictionary of the notification object.

---

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