男生头发两侧剃线:VC++6.0共享内存

来源：百度文库编辑：偶看新闻时间：2024/04/28 07:57:58

VC++6.0共享内存技术总结
程序1 -- 建立共享区，写数据:
Cpp代码

int main(int argc, char* argv[])
{
HANDLE lhShareMemory;
char* lpBuffer = NULL;
lhShareMemory = CreateFileMapping(HANDLE(0xFFFFFFFF), NULL, PAGE_READWRITE,
0, 10, "mySharedMemory");
if (NULL == lhShareMemory)
{
if (ERROR_ALREADY_EXISTS == GetLastError())
{
cout << "Already exists!";
}
else
{
cout << "Create Sheared Memory unsuccessfully!";
}
return 0;
}
lpBuffer = (char*)MapViewOfFile(lhShareMemory, FILE_MAP_WRITE, 0, 0, 10);
if (NULL == lpBuffer)
{
cout << "Get Share memory unsuccessfully!";
return 0;
}
strcpy(lpBuffer, "hello");
cout << "进程通信：采用共享内存" << endl;
cout << "写进程" << endl;
cout << "写入数据:"<< endl<Sleep(100000);
UnmapViewOfFile(lpBuffer);
return 0;
}
程序2 -- 使用共享区，读数据:
Cpp代码

int main(int argc, char* argv[])
{
HANDLE lhShareMemory;
char* lpcBuffer;
lhShareMemory = OpenFileMapping(FILE_MAP_READ, false, "mySharedMemory");
if (NULL == lhShareMemory)
{
cout << "Open share memory unsuccessfully!" << endl;
DWORD ldwError = GetLastError();
cout << ldwError;
return 0;
}
lpcBuffer = (char*)MapViewOfFile(lhShareMemory, FILE_MAP_READ, 0, 0, 100);
if (NULL == lpcBuffer)
{
cout << "Open share memory unsuccessfully!";
return 0;
}
cout << "进程通信：采用共享内存" << endl;
cout << "读进程" << endl;
cout << "读入数据:" << endl;
for (int i = 0; i < 100; ++i)
{
cout << *(lpcBuffer + i);
}
UnmapViewOfFile(lpcBuffer);
return 0;
}
详情请参考附件里完整的工程。
ShareMemory.rar (26.5 KB)

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