ulFlags (ULONG) - input

Specifies options for the operation. Contains one of the following flags:

MMIO_MATCHCOMPRESSTYPE

Uses compression type (ulCompressType field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure.
MMIO_MATCHCOMPRESSSUBTYPE
Uses the compression subtype (ulCompressSubType field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure.
MMIO_MATCHHWID
Uses the hardware ID (szHWID field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure.
MMIO_MATCHCAPSFLAGS
Uses the capability flags (ulCapsFlags field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure. This is not based on an exact match. If the target entry contains the flags, the match is satisfied.
MMIO_SKIPMATCH
Skips the search and loads the CODEC procedure using the DLL name (szDLLName) and Procedure name (szProcName) specified in the CODECINIFILEINFO structure.
MMIO_MATCHDLL
Uses the DLL Name (szDLLName field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure.
MMIO_MATCHFOURCC
Uses the FOURCC code (fcc field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure.
MMIO_MATCHPROCEDURENAME
Uses the case-sensitive procedure name (szProcName field of CODECINIFILEINFO) as a search criteria for loading the CODEC procedure.

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