Parameters

handle

The handle of an object related to the media being written.

function

Set to MM_RANDOM_WRITE_ONCE.

parameter1

Specifies the number of units to be written.

parameter2

Specifies the logical unit number of the beginning unit.

parameter3

Reserved. Set to zero.

bufferLen

The size of the buffer (i.e., the number of units multiplied by the unit size).

buffer

Points to a buffer in memory were the data is written from.

returnParameter

Not used.