Creates or opens a named or unnamed file mapping object for a specified file. To specify the NUMA node for the physical memory, see CreateFileMappingNuma. Syntax HANDLE CreateFileMappingW( [in] HANDLE hFile, [in, optional] LPSECURITY_ATTRIBUTES lpFileMappingAttributes, [in] DWORD flProtect, [in] DWORD dwMaximumSizeHigh, [in] DWORD dwMaximumSizeLow, [in, optional] LPCWSTR lpName ); Parameters [in]