## The `onOpen' callback

Event number: 26
Generated for: Any object

The `onOpen` callback is invoked after an object has been opened.

For the System object, the `onOpen` event has a special meaning. If you have packaged your APL workspace into a standalone application, this event is triggered under MacOS when the user drags a file icon on to your application icon, once the application is running. (It is not triggered when the application first starts up, and is not triggered under Windows). The `file` and `action` properties indicate what files you need to open or print.

Topic: APLX Help : System Classes : Callbacks : onOpen

[ Previous | Next | Contents | Index ]