---
title: "controlTextDidBeginEditing:"
framework: objectivec
role: symbol
role_heading: Instance Method
path: "objectivec/nsobject-swift.class/controltextdidbeginediting:"
---

# controlTextDidBeginEditing:

Sent when a control with editable text begins an editing session.

## Declaration

```occ
- (void) controlTextDidBeginEditing:(NSNotification *) obj;
```

## Parameters

- `obj`: The notification object. The name of the notification is always doc://com.apple.documentation/documentation/AppKit/NSControl/textDidBeginEditingNotification.

## Discussion

Discussion This method is invoked when the user begins editing text in a control such as a text field or a form field. The control posts a textDidBeginEditingNotification 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. See controlTextDidEndEditing: for an explanation of why you may not always get one invocation of controlTextDidBeginEditing: for each invocation of controlTextDidEndEditing:.