On Aug 9, 2009, at 3:15 PM, Nat Burke wrote:
I have posted my event tap creation code below - I've searched all
over
the mailing list and the net to see if I could find a solution, but
I am
genuinely stuck. Any help is greatly appreciated!
// Create an event tap.
eventMask = CGEventMaskBit(kCGEventRightMouseDown) |
CGEventMaskBit(kCGEventRightMouseUp) |
CGEventMaskBit(kCGEventRightMouseDragged) |
CGEventMaskBit(kCGEventMouseMoved) |
CGEventMaskBit(kCGEventScrollWheel) |
CGEventMaskBit(kCGEventFlagsChanged) |
CGEventMaskBit(kCGEventKeyDown) |
CGEventMaskBit(kCGEventKeyUp);
DebugLog(@"Event before: %x", eventMask);
eventTap = CGEventTapCreate(kCGSessionEventTap,
kCGHeadInsertEventTap,
kCGEventTapOptionDefault, eventMask, MouseCallback, self);
DebugLog(@"Event after: %x", eventMask);
if (!eventTap) {
fprintf(stderr, "Failed to create event tap\n");
exit(1);
}
// Create a run loop source.
runLoopSource =
CFMachPortCreateRunLoopSource(/*kCFAllocatorDefault*/NULL, eventTap,
0);
CFRelease(eventTap);
// Add to the current run loop.
CFRunLoopAddSource([[NSRunLoop currentRunLoop] getCFRunLoop],
runLoopSource, kCFRunLoopCommonModes);
// Enable the event tap.
CGEventTapEnable(eventTap, true);
CFRelease(runLoopSource);
I compared your code to the code that I use that gets key down
successfully. One difference is that I don't immediately CFRelease
the event tap and source, I keep them around as long as I use the
tap. Another is that the first 2 parameters I pass to
CGEventTapCreate are kCGAnnotatedSessionEventTap and
kCGTailAppendEventTap.
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