This message is sent to an I/O procedure to request that information be
removed from the file.
pmmioinfo (PMMIOINFO)
A
pointer to an MMIOINFO data structure.
usMsg (USHORT)
lParam1 (LONG)
Starting
position for deletions.
lParam2 (LONG)
Length
of information to be deleted.
rc (ULONG)
Return
codes indicating success or failure:
MMIO_SUCCESS
The information was removed from the
file sucessfully.
MMIO_ERROR
An
error code is returned.
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