#define BUF_SIZE 256

 TCHAR szName[]=TEXT("Global\\YourFileMappingObject");    //指向同一块共享内存的名字

 int SetFileName(LPCTSTR str)

 {

     HANDLE hMapFile;

     LPCTSTR pBuf;

     hMapFile = CreateFileMapping(

             INVALID_HANDLE_VALUE,    // use paging file

             NULL,                    // default security

             PAGE_READWRITE,          // read/write access

             ,                       // maximum object size (high-order DWORD)

             BUF_SIZE,                // maximum object size (low-order DWORD)

             szName);                 // name of mapping object

     if (hMapFile == NULL)

     {

         _tprintf(TEXT("Could not create file mapping object (%d).\n"),

         GetLastError());

         return ;

     }

     pBuf = (LPTSTR) MapViewOfFile(hMapFile,   // handle to map object

             FILE_MAP_ALL_ACCESS, // read/write permission

             ,

             ,

             BUF_SIZE);

     if (pBuf == NULL)

     {

         _tprintf(TEXT("Could not map view of file (%d).\n"),

         GetLastError());

         CloseHandle(hMapFile);

         return ;

     }

     memcpy((PVOID)pBuf, str, BUF_SIZE);

     return ;

 }

 LPCTSTR GetBuffer()

 {

     HANDLE hMapFile;

     LPCTSTR pBuf;

     hMapFile = CreateFileMapping(

             INVALID_HANDLE_VALUE,    // use paging file

             NULL,                    // default security

             PAGE_READWRITE,          // read/write access

             ,                       // maximum object size (high-order DWORD)

             BUF_SIZE,                // maximum object size (low-order DWORD)

             szName);                 // name of mapping object

     if (hMapFile == NULL)

     {

         _tprintf(TEXT("Could not create file mapping object (%d).\n"),

             GetLastError());

         return NULL;

     }

     pBuf = (LPTSTR) MapViewOfFile(hMapFile,   // handle to map object

             FILE_MAP_ALL_ACCESS, // read/write permission

             ,

             ,

             BUF_SIZE);

     if (pBuf == NULL)

     {

         _tprintf(TEXT("Could not map view of file (%d).\n"),

                 GetLastError());

         CloseHandle(hMapFile);

         return NULL;

     }

     return pBuf;

 }