typedef struct tagMIXERCAPSW {
    WORD            wMid;                   
    WORD            wPid;                   
    MMVERSION       vDriverVersion;         
    WCHAR           szPname[MAXPNAMELEN];   
    DWORD           fdwSupport;             
    DWORD           cDestinations;          
} MIXERCAPSW, *PMIXERCAPSW, *LPMIXERCAPSW;

typedef LPMIXERCAPSW LPMIXERCAPS;