Qt standalone application with Cocoa Library Crash

Hi All,

Below is my usecase:

1.) I have a Window Tracking Library on MAC written using Cocoa framework, with XCode 3.1.

2.) I have a QT application compiled on same MAC.

I want to use the DYLIB generated in 1 in Qt application. I am able to compile it successfully without any issues and also able to instantiate the WindowTracker object.

However, the application crashes when I am trying to use the methods defined in the library ?

I would like to know if there are any known issues with such usage, if its possible and any alternatives ?

I have tried compiling Qt with Cocoa and now strangely my application throws an exception at start itself:

Code:

*** Terminating app due to uncaught exception 'NSArchiverArchiveInconsistency', reason: '*** -[NSKeyedUnarchiver decodeObjectForKey:]: missing class information for object'
*** Call stack at first throw:
(
	0   CoreFoundation                      0x00007fff8741ad24 __exceptionPreprocess + 180
	1   libobjc.A.dylib                     0x00007fff841960f3 objc_exception_throw + 45
	2   CoreFoundation                      0x00007fff8741ab47 +[NSException raise:format:arguments:] + 103
	3   CoreFoundation                      0x00007fff8741aad4 +[NSException raise:format:] + 148
	4   Foundation                          0x00007fff852683c4 _decodeObjectBinary + 665
	5   Foundation                          0x00007fff85267f99 _decodeObject + 208
	6   AppKit                              0x00007fff8485340d loadNib + 146
	7   AppKit                              0x00007fff84852b70 +[NSBundle(NSNibLoading) _loadNibFile:nameTable:withZone:ownerBundle:] + 763
	8   AppKit                              0x00007fff848527a5 +[NSBundle(NSNibLoading) loadNibNamed:owner:] + 326
	9   QtGui                               0x00000001002cd699 _Z7qt_initP19QApplicationPrivatei + 2249
	10  QtGui                               0x00000001003373dd _ZN19QApplicationPrivate9constructEv + 77
	11  QtGui                               0x0000000100337846 _ZN12QApplicationC2ERiPPci + 102
	12  myApp                              0x000000010000f932 main + 66
	13  myApp                              0x000000010000ea36 _start + 224
	14  myApp                              0x000000010000e955 start + 33
	15  ???                                 0x0000000000000001 0x0 + 1
)
terminate called after throwing an instance of 'NSException'
Abort trap

Any ideas or help on how to get my application working will be greatly appreciated.

The APIs that I have mainly used in my Library are:

1.) CGWindow.h
2.) CGDirectDisplay.h

Thanks,
Raja.