The MMCKINFO Structure

Several Multimedia file I/O functions use the MMCKINFO structure to specify and retrieve information about RIFF chunks. The MMSYSTEM.H header file defines the MMCKINFO structure as follows:

typedef struct _MMCKINFO
{
        FOURCC                ckid;                        // chunk ID
        DWORD                cksize;                        // chunk size
        FOURCC                fccType;                // form type or list type
        DWORD                dwDataOffset;        // offset of data portion of chunk
        DWORD                dwFlags;                // flags
} MMCKINFO;