mmioSetInfo function

  • Article

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

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

 Mmsystem.h (include Windows.h)

Library

 Winmm.lib

DLL

 Winmm.dll