Open About App window programmatically on macOS

Question

On Mac OS X, every app has an "About" window, which can be opened by clicking About [appname] in the [appname] menu in the menu bar.

I'd like to open this window programmatically. Is this possible?

EG: The About button for iTunes:

Answer 1

The About menu item is connected to the orderFrontStandardAboutPanel method of NSApplication, you can call it programmatically with

[NSApp orderFrontStandardAboutPanel:self]; // or nil as parameter

or in Swift

NSApp.orderFrontStandardAboutPanel(self) // or nil as parameter