参见《刚刚完成的一个进程通信及托管非托管混合编程的总结之概述》和《刚刚完成的一个进程通信及托管非托管混合编程的总结之自定义数据》
#pragma once
#include "MyData.h"
#ifndef __FILEMAPPING_H__
#define __FILEMAPPING_H__
class CFileMapping
{
public:
CFileMapping();
~CFileMapping();
// Operations
bool Initialize(LPCTSTR, int);
void Write(char*);
void Read(char*&);
private:
HANDLE m_hFileHandle;
LPVOID m_pViewOfFile;
int m_nFileSize;
};
#endif //__FILEMAPPING_H__
#include "StdAfx.h"
#include "FileMapping.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
////////////////////////////////////////////////////////////////////////////////
// Constructor / Destructor //
////////////////////////////////////////////////////////////////////////////////
CFileMapping::CFileMapping()
{
m_hFileHandle = NULL;
m_pViewOfFile = NULL;
m_nFileSize = 0;
}
CFileMapping::~CFileMapping()
{
if( m_pViewOfFile != NULL )
{
if( UnmapViewOfFile(m_pViewOfFile) == 0)
TRACE("Unable to unmap view of file. Error is %d", GetLastError());
}
if( m_hFileHandle!= NULL)
CloseHandle(m_hFileHandle);
}
////////////////////////////////////////////////////////////////////////////////
// Operations //
////////////////////////////////////////////////////////////////////////////////
bool CFileMapping::Initialize(LPCTSTR pFileName, int pFileSize)
{
m_nFileSize = pFileSize;
// creates as well as opens a file map.
m_hFileHandle = CreateFileMapping( INVALID_HANDLE_VALUE, // handle to file
NULL, // security
PAGE_READWRITE, // protection
0, // high-order DWORD of size
m_nFileSize, // low-order DWORD of size
pFileName // object name
);
if( !m_hFileHandle ) {
TRACE("Unable to create file mapping. Error is %d", GetLastError());
return false;
}
// Map the file into the current address space.
m_pViewOfFile = MapViewOfFile( m_hFileHandle, // handle to file-mapping object
FILE_MAP_ALL_ACCESS, // access mode
0, // high-order DWORD of offset
0, // low-order DWORD of offset
0 // number of bytes to map
);
if( m_pViewOfFile == NULL ) {
TRACE("Unable to map to the current address space. Error is %d", GetLastError());
return false;
}
return true;
}
// Since the file Object is in the same address space, we can use just like dynamic
// allocated memory
void CFileMapping::Write(char* pData)
{
ASSERT( m_nFileSize != 0 );
memcpy( m_pViewOfFile, pData, m_nFileSize );
}
void CFileMapping::Read(char*& pBuffer)
{
ASSERT( m_nFileSize != 0 );
memcpy( pBuffer, m_pViewOfFile, m_nFileSize );
}
FileMapping.h：
#pragma once#include "MyData.h"#ifndef __FILEMAPPING_H__ #define __FILEMAPPING_H__ class CFileMapping { 
public: CFileMapping(); ~CFileMapping(); // Operations bool Initialize(LPCTSTR, int); void Write(char*); void Read(char*&);private: HANDLE m_hFileHandle; LPVOID m_pViewOfFile; int m_nFileSize; }; #endif //__FILEMAPPING_H__
FileMapping.cpp：
#include "StdAfx.h"#include "FileMapping.h"#ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif //////////////////////////////////////////////////////////////////////////////// // Constructor / Destructor // //////////////////////////////////////////////////////////////////////////////// CFileMapping::CFileMapping() { m_hFileHandle = NULL; m_pViewOfFile = NULL; m_nFileSize = 0; } CFileMapping::~CFileMapping() { if( m_pViewOfFile != NULL ) { 
if( UnmapViewOfFile(m_pViewOfFile) == 0) TRACE("Unable to unmap view of file. Error is %d", GetLastError()); } if( m_hFileHandle!= NULL) CloseHandle(m_hFileHandle); } //////////////////////////////////////////////////////////////////////////////// // Operations // //////////////////////////////////////////////////////////////////////////////// bool CFileMapping::Initialize(LPCTSTR pFileName, int pFileSize) { m_nFileSize = pFileSize; // creates as well as opens a file map. m_hFileHandle = CreateFileMapping( INVALID_HANDLE_VALUE, // handle to file NULL, // security PAGE_READWRITE, // protection 0, // high-order DWORD of size m_nFileSize, // low-order DWORD of size pFileName // object name ); if( !m_hFileHandle ) { TRACE("Unable to create file mapping. Error is %d", GetLastError()); return false; } // Map the file into the current address space. m_pViewOfFile = MapViewOfFile( m_hFileHandle, // handle to file-mapping object FILE_MAP_ALL_ACCESS, // access mode 0, // high-order DWORD of offset 0, // low-order DWORD of offset 0 // number of bytes to map ); if( m_pViewOfFile == NULL ) { TRACE("Unable to map to the current address space. Error is %d", GetLastError()); return false; } return true; } // Since the file Object is in the same address space, we can use just like dynamic // allocated memory void CFileMapping::Write(char* pData) { ASSERT( m_nFileSize != 0 ); memcpy( m_pViewOfFile, pData, m_nFileSize ); } void CFileMapping::Read(char*& pBuffer) { ASSERT( m_nFileSize != 0 ); memcpy( pBuffer, m_pViewOfFile, m_nFileSize ); }