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Windows Biometric Driver EngineAdapter RRS feed

  • Question

  • Dear, everyone.

    I would like to ask a question about EngineAdapter of Windows Biometric Driver.

    I can't communicate with device in the EngineAdapter every interface functions.

    Because the EngineHandle value of WINBIO_PIPELINE parameter is always INVALID_HANDLE_VALUE.

    So that, when I call the DeviceIoControl() function with this EngineHandle, it fails with ERROR_HANDLE_VALUE.

    I think this handle value is not initialized, but I don't know how to initialize it.

    Please give me a help to initialize this value.

    Thanks.


    kms

    Thursday, May 5, 2016 3:09 AM