Sent when a control with editable text begins an editing session.
- macOS 10.0–10.14Deprecated
The notification object. The name of the notification is always
Text Did Begin Editing Notification
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
NSControl notification, and if the control’s delegate implements this method, it is automatically registered to receive the notification. Use the key
@"NSField to obtain the field editor from the
user dictionary of the notification object.