Apple

Following is the code snippet:

   -( void )startEventTapinThread //Called in a separate thread.
   {
    NSAutoreleasePool *pool =[ [ NSAutoreleasePool alloc] init];

    CFRunLoopRef runloop =(CFRunLoopRef)CFRunLoopGetCurrent();
    CGEventMask interestedEvents = CGEventMaskBit(kCGEventFlagsChanged)|CGEventMaskBit(kCGEventKeyDown);
    CFMachPortRef eventTap = CGEventTapCreate(kCGSessionEventTap, kCGHeadInsertEventTap, 0, interestedEvents, myCGEventCallback, self); //self is the object pointer our method
    CFRunLoopSourceRef source = CFMachPortCreateRunLoopSource(kCFAllocatorDefault, eventTap, 0);
    CFRunLoopAddSource((CFRunLoopRef)runloop , source, kCFRunLoopCommonModes);
    CFRunLoopRun();
    [ pool release];
   }

   CGEventRef myCGEventCallback(CGEventTapProxy proxy, CGEventType type, CGEventRef event, void *refcon)
   {
    CGEventType eventType = CGEventGetType(event);
    //execute the code related to feature
   }

After referring to mailing list queries I found that system disables event tap after some time. So, I am enabling the vent tap in my callback function:

CGEventType eventType = CGEventGetType(event);

if( eventType == kCGEventTapDisabledByTimeout)

{

CGEventTapEnable(my_eventtap_instance, YES);

return NULL;

}

But still the problem exists. After debugging for hours I noticed that myCGEventCallback is invoked only for kCGEventFlagsChanged ; It is not invoked only for kCGEventKeyDown. What am I doing wrong?
Could someone help me out.

Thanks and Regards,
Deepa

Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus.