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I need to listen for global mouse events(not bound to an app) on my Mac in an app written in Python. I'm using PyObjC, but I can't figure out how to do it. Plain ObjC examples or other Python techniques also appreciated. My code so far: from Quartz import * def MyFunction(proxy, type, event): print event CGEventTapCreate(kCGHIDEventTap, kCGTailAppendEventTap, kCGEventTapOptionListenOnly, kCGEventLeftMouseDown, MyFunction) == Segmentation fault I know I need to add it to an event source later on, but I need to get this working first. [update] Using PyObjC form Macports solved the segfault, so now I wrote this: from Quartz import * def MyFunction(p, t, e, c): print e tap = CGEventTapCreate(kCGHIDEventTap, kCGHeadInsertEventTap, kCGEventTapOptionListenOnly, kCGEventLeftMouseDown, MyFunction, None) runLoopSource = CFMachPortCreateRunLoopSource(None, tap, 0); CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopDefaultMode); CGEventTapEnable(tap, True); CFRunLoopRun(); But this just runs forever and does not respond to mouse events, what is wrong?

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