I am trying to write A Windows Mobile app that will include DRM metering but I have been unable to find IWMDRMDeviceApp::GenerateMeterChallenge or any equivalent within the Windows Mobile 6 SDK. The only possibility that I have come up with so far is Windows Media DRM 10 for Portable Devices Porting Kit but this has a substantial licensing fee and seems to be for implementation of devices rather than end user applications.
Any suggestions or hints as to what SDK I should be using would be appreciated.
Cheers, David