UnmapViewOfFile
The UnmapViewOfFile
function unmaps a mapped view of a file from the calling process s address
space.
BOOL UnmapViewOfFile(
|
LPCVOID lpBaseAddress |
// address where
mapped view begins |
|
); |
|
Parameters
lpBaseAddress
Points to the
base address of the mapped view of a file that is to be unmapped. This value
must be identical to the value returned by a previous call to the MapViewOfFile or MapViewOfFileEx function.
Return Values
If the
function succeeds, the return value is nonzero, and all dirty pages within the
specified range are written lazily to disk.
If the
function fails, the return value is zero. To get extended error information,
call GetLastError.
Remarks
Although an
application may close the file handle used to create a file mapping object, the
system holds the corresponding file open until the last view of the file is
unmapped.
Windows
95: Files for which the last view has
not yet been unmapped are held open with the same sharing restrictions as the
original file handle.
Windows
NT: Files for which the last view has
not yet been unmapped are held open with no sharing restrictions.
See Also