I am creating a Cocoa Document based application. My application is a simple drawing application that allows user to paint on a canvas and save the document as a JPG or a PNG. I would obviously like the user to have multiple unrelated drawings open simultaneously and work on them.
My application always starts with a blank Untitled canvas and lets the user paint on the canvas. Then the user can save the drawing as a JPG or a PNG.
My application would only have a "New", "Save", and "Save As" but no "Open" since I always start with a blank canvas and I don't have the concept of saving the drawing to my own drawing format and allowing the user to open the drawing later again to edit.
Is using a document based application a good idea. What should I use as the document type extension when I create the Cocoa Document Based application project in Xcode.
