Demonstrating how to implement programmatic creation of tabs in NSWindows without the use of NSDocument.

Modified by Frank Rausch to show how to make the tab items a target for drag and drop; see Stack Overflow.

• Checkout the shared-window-controller tag to see how to re-use a single NSWindowController for all tabs as per my experimental blog post. Don't use this in production, though.
• Checkout the multiple-window-controllers tag or the current master branch to see how to manage NSWindowControllers for your tabs. I wrote about this production-ready approach, too.

The underlying difficulty people on StackOverflow etc. are experiencing is that creating your NSWindowController from a storyboard will initialize the window contents, but you need to keep the window controller itself alive to respond to main menu actions. Otherwise, the "+" (add tab) button will appear broken for all but the initial tab.

Copyright (c) 2019--2021 Christian Tietze. Distributed under the MIT License.