macOS Edit Window in Document Based Application

[Blakeasd]

This is my first time making a document application and I am trying to set it so all the windows have an orange background. Here is my code:

 [window setBackgroundColor:[NSColor orangeColor]];

I get an error saying 'window' is undeclared. By the way I am putting this code in the Xcode generated MyDocument.m file. My question is how is the default window it gives you declared(the one that says your document contents here)? I know in a regular Cocoa application it is declared as window. What is it called in a document based application? Or how do I change the background of it programmatically?

 

[Catfish_Man]

Document-based apps have more than one window; you'll need to access them via the window controllers for your documents.