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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| No
| Win32s
| No
| Import Library
| kernel32.lib
| Header File
| winbase.h
| Unicode
| No
| Platform Notes
| None
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VirtualUnlock
The VirtualUnlock function unlocks a specified range of pages in the virtual address space of a
process, enabling the system to swap the pages out to the paging file if
necessary.
BOOL VirtualUnlock(
LPVOID lpAddress,
| // address of first byte of range
| DWORD dwSize
| // number of bytes in range
| );
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Parameters
lpAddress
Points to the base address of the region of pages to be unlocked.
dwSize
Specifies the size, in bytes, of the region being unlocked. The region of
affected pages includes all pages containing one or more bytes in the range from
the lpAddress parameter to (lpAddress+dwSize). This means that a 2-byte range straddling a page boundary causes both pages
to be unlocked.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error
information, call GetLastError.
Remarks
For the function to succeed, the range specified need not match a range passed
to a previous call to the VirtualLock function, but all pages in the range must be locked.
See Also
VirtualLock
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Unix Manual Pages
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