Q:

Xamarin Mac Toolbar and WindowController.h

The question is:
I use this guide in order to create a toolbar in my first Xamarin. Mac application.  But the problem is that WindowController.h mentioned in the guide does not exist and simply cannot Ctrl-Drag outlet or action to ViewController.h
Any suggestions how to do things right? 

A:

Did you make sure to add a custom class to your NSWindowController?   You can give it a custom class name in XCode and then when you return to Xamarin Studio there will be a C# class generated with a code behind file. 
Once you have a C# class in your project with the [Register] attribute (automatically added in the code-behind when the class is generated), the XCode project will have the corresponding header file to add outlets to.