MMIOM_WRITE

	Overview

	Group

	Quick Info

The MMIOM_WRITE message is sent to an I/O procedure by the mmioWrite function to request that data be written to an open file.

MMIOM_WRITE

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.

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.