MMIOM_WRITEFLUSH

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The MMIOM_WRITEFLUSH message is sent to an I/O procedure by the mmioWrite function to request that data be written to an open file and that any internal buffers used by the I/O procedure be flushed to disk.

MMIOM_WRITEFLUSH

lParam1 = (LPARAM) lpBuffer

lParam2 = (LPARAM) cbWrite

Parameters
lpBuffer

Address of a buffer containing the data to write to the file.

cbWrite
Number of bytes to write to file.l

Return Values
Returns the number of bytes actually written to the file. If there is an error, the return value is

Remarks
The I/O procedure is responsible for updating the lDiskOffset member of the MMIOINFO structure to reflect the new file position after the write operation.

This message is equivalent to the MMIOM_WRITE message except that it requests that the I/O procedure flush its internal buffers, if any. Unless an I/O procedure performs internal buffering, this message can be handled exactly like the MMIOM_WRITE message.

See Also
mmioWrite, MMIOINFO, MMIOM_WRITE

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