Thanks all for some tips. I'm going to try the following ideas and I'll let
you know how it goes:
- Run as root
- Try just trapping on keyboard events
- Append my event tap to the tail, and try annotated.
On Mon, Aug 10, 2009 at 9:37 AM, James W. Walker <o...@jwwalker.com> wrote:
>
> 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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