CaptureKey security capability on S60 v3

Hello,

I am trying to use RWindowGroup::CaptureKey/CaptureKeyUpAndDowns to override the default menu application (the customer's request ). The application works fine on the emulator (Carbide C++, Symbian OS 9, Series 60 v3), however on the phone (E50) when pressing the menu key, the default menu application is launched. On the phone, CaptureKey/CaptureKeyUpAndDowns returns -46 (KErrPermissionDenied). The SDK help says this error is returned if the ws.ini file has the requested key protected. What is this ws.ini file. I've searched it with FExplorer/Y-Browser on both a Nokia 6600 phone and also on the E50 phone and no such file was found. Perhaps on v3, the file is actually on the phone but the file explorer could not find it due to security issues. I've also could not find it on the SDK root on the hard disk.

Another source of the problem could be due to signing the application. I've used a Developer Certificate from Symbian Signed, which has rights for the SwEvent capability under which the CaptureKey/CaptureKeyUpAndDowns methods recide. However the same error (-46) is returned even when signing it with this certificate.

So my question would be whether the problem is related to ws.ini file or to the signing of the application. Actually any information related you might have would be very helpful.

Thanks.