mmioSetInfo function

The mmioSetInfo function updates the information retrieved by the mmioGetInfo function about a file opened by using the mmioOpen function. Use this function to terminate direct buffer access of a file opened for buffered I/O.

Syntax

MMRESULT mmioSetInfo(
   HMMIO      hmmio,
   LPMMIOINFO lpmmioinfo,
   UINT       wFlags
);

Parameters

• hmmio
  File handle of the file.

• lpmmioinfo
  Pointer to an MMIOINFO structure filled with information by the mmioGetInfo function.

• wFlags
  Reserved; must be zero.

Return value

Returns zero if successful or an error otherwise.

Remarks

If you have written to the file I/O buffer, set the MMIO_DIRTY flag in the dwFlags member of the MMIOINFO structure before calling mmioSetInfo to terminate direct buffer access. Otherwise, the buffer will not get flushed to disk.

Requirements