typedef struct tACMFILTERDETAILS
{
    DWORD           cbStruct;
    DWORD           dwFilterIndex;
    DWORD           dwFilterTag;
    DWORD           fdwSupport;
    LPWAVEFILTER    pwfltr;
    DWORD           cbwfltr;
    char            szFilter[ACMFILTERDETAILS_FILTER_CHARS];

} ACMFILTERDETAILS, *PACMFILTERDETAILS, FAR *LPACMFILTERDETAILS;