on
  DWORD dwMaximumSizeHigh,            // high-order DWORD of size
  DWORD dwMaximumSizeLow,             // low-order DWORD of size
  LPCTSTR lpName                      // object name
);
LPVOID MapViewOfFile(
  HANDLE hFileMappingObject,   // handle to file-mapping object
  DWORD dwDesiredAccess,       // access mode
  DWORD dwFileOffsetHigh,      // high-order DWORD of offset
  DWORD dwFileOffsetLow,       // low-order DWORD of offset
  SIZE_T dwNumberOfBytesToMap  // number of bytes to map
);
BOOL UnmapViewOfFile(
  LPCVOID lpBaseAddress   // starting address
);

Tips:
也可以尽量早地把对象关闭,以消除资源泄漏的可能性,如:
HANDLE hFile = CreateFile();
HANDLE hFileMapping = CreateFileMapping(hFile,);
CloseHandle(hFile);

PVOID pvFile = MapViewOfFile(hFileMapping,);
CloseHandle(hFileMapping);

// use the memory-mapped file.

UnmapViewOfFile(pvFile);