[jbrimm]

In Cocoa, how do I accomplish multiple file formats? I want to create a text program that allows you to open several different file formats, and save a document in those formats as well, but I have no clue on how to accomplish this. I can save documents in one format, and open files of that same format, but I can't accomplish more than one.

I will also want to accomplish this in future programs (non text programs; possibly using custom file formats), so I need a way to do it that can be used for more than just text programs.

Thanks in advance.

[LordJavac]

The routines for reading/writing files in NSDocument have an argument that is the type of the file. You'll also have to add the file type to the bindings in the build settings. You could also have multiple instances of NSDocument with their own file types.