CFBundleTypeName 3 with a corresponding value, containing the name that your program assigns to these filetype extensions.CFBundleTypeExtensions 2 key with a corresponding array of values, matching each filetype extension that your program targets.

The value corresponding to that should be an array of elements. To integrate with the “Open With” menu on macOS, a CFBundleDocumentTypes 1 key should be added in the ist file. It parses the ist file in the Contents folder at the root of the application bundle, and every key that’s relevant to Core Foundation in that file starts with CF. On macOS, the framework responsible for managing integration with discovering and managing “open with” context menu items is Core Foundation. This post assumes basic knowledge of macOS application bundle structure. This is the second part of the series where I write about things I learned while writing a desktop app.

So here’s how I did it, making it work for macOS, Windows, and Ubuntu, and how it handles in PyQt. So you know how you can right click on a file and have options to open it with different programs? That’s what I wanted to do when I was working on my Quaver Lyrics Finder project.

Open on ubuntu vs mac