The following code illustrates how to obtain the length of the CODEC procedure name.

   CODECINIFILFO  CODECIniFileInfo;
   PULONG pulNameLength;
    ...

   mmset( &CODECIniFileInfo, '\0', sizeof(CODECINIFILEINFO) );
   CODECIniFileInfo.ulStructLen = sizeof(CODECINIFILEINFO);
   CODECIniFileInfo.fcc = FOURCC_MYPROC;
   CODECIniFileInfo.ulCompressType = COMPRESSTYPE_MYPROC;
   CODECIniFileInfo.ulCompressSubType = COMPRESSSUBTYPE_MYPROC;
   CODECIniFileInfo.ulMediaType = MEDIATYPE_MYPROC;
   CODECIniFileInfo.ulCapsFlags = CODEC_CAN_DECOMPRESS;
   CODECIniFileInfo.szHWID = HWID_MYPROC
   rc = mmioQueryCODECNameLength (&CODECIniFileInfo,
                     pulNameLength);
   if (rc)
      /* error */
   else
     ...