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c++drmwma

How to predeliver WMA DRM licenses?

I'm trying to install WMA DRM licenses files silently so that users would not have to play each song and acknowledge for each license.

I figured out that I need to do something like this :

HRESULT res = CoCreateInstance(__uuidof(RMGetLicense),NULL,CLSCTX_ALL,__uuidof(IRMGetLicense ),(void**) &pLicense );
res = pLicense->GetLicenseFromURL(NULL, bstrURL);

The bstrURL is expected to contain a keyID as a parameter, which allow to retrieve the file matching with the music file. I can't find how to get this keyID back from the WMA file.

I may get the problem wrongly though. Am I in the good way ?

Solution

  • You have to pass header object as a first parameter. More information is in MSDN