Topic: APLX Help : System Classes : Callbacks : onAboutMenu
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The 'onAboutMenu' callback


Event generated under MacOS only

Event number: 37
Generated for: System

When you create a packaged application from your APLX workspace, your code will normally use System Classes to create windows and the menus associated with them. However, under MacOS, the 'About..' menu item resides in the System menu (or application menu under MacOS X), so it is outside the scope of the user-defined menus.

The onAboutMenu callback allows your packaged APL application to be notified when the user has selected the 'About..' menu item, so that you can display an appropriate information window. This will typically contain information about the application, any copyright notice, and a version number.

Under Windows, this callback will never be triggered. Instead, you should create your own 'About..' menu item, usually in your own 'Help' menu.

See also the onPreferencesMenu and onQuitMenu callbacks.


Topic: APLX Help : System Classes : Callbacks : onAboutMenu
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