MMCKINFO structure

The MMCKINFO structure contains information about a chunk in a RIFF file.

Syntax

typedef struct {
  FOURCC ckid;
  DWORD  cksize;
  FOURCC fccType;
  DWORD  dwDataOffset;
  DWORD  dwFlags;
} MMCKINFO;

Members

• ckid
  Chunk identifier.

• cksize
  Size, in bytes, of the data member of the chunk. The size of the data member does not include the 4-byte chunk identifier, the 4-byte chunk size, or the optional pad byte at the end of the data member.

• fccType
  Form type for "RIFF" chunks or the list type for "LIST" chunks.

• dwDataOffset
  File offset of the beginning of the chunk's data member, relative to the beginning of the file.

• dwFlags
  Flags specifying additional information about the chunk. It can be zero or the following flag:

  Name	Description
  MMIO_DIRTY	The length of the chunk might have changed and should be updated by the mmioAscend function. This flag is set when a chunk is created by using the mmioCreateChunk function.

   

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Mmsystem.h (include Windows.h)

See also

mmioAscend

mmioCreateChunk