How can I create a status bar item with Cocoa and Python (PyObjC)?

Question

I have created a brand new project in XCode and have the following in my AppDelegate.py file:

from Foundation import *
from AppKit import *

class MyApplicationAppDelegate(NSObject):
    def applicationDidFinishLaunching_(self, sender):
        NSLog("Application did finish launching.")

        statusItem = NSStatusBar.systemStatusBar().statusItemWithLength_(NSVariableStatusItemLength)
        statusItem.setTitle_(u"12%")
        statusItem.setHighlightMode_(TRUE)
        statusItem.setEnabled_(TRUE)

However, when I launch the application no status bar item shows up. All the other code in main.py and main.m is default.

Answer 1

I had to do this to make it work:

1. Open MainMenu.xib. Make sure the class of the app delegate is MyApplicationAppDelegate. I'm not sure if you will have to do this, but I did. It was wrong and so the app delegate never got called in the first place.

2. Add statusItem.retain() because it gets autoreleased right away.