C++ ReadFile使用问题

Guoziang郭郭郭

//这段代码中最后的stud2读不出来，不知道咋回事

//读入数据
        int ret_num = 0;
        DWORD dwRealRead = 0;
        bRet = ReadFile(hFile, &ret_num, sizeof(ret_num), &dwRealRead, NULL);

        char cha = 0;
        bRet = ReadFile(hFile, &cha, sizeof(cha), &dwRealRead, NULL);

        //文件指针
        //SetFilePointer(hFile, sizeof(int)+sizeof(char),NULL,FILE_BEGIN);
        //SetFilePointer(hFile, -32 - sizeof(Student), NULL, FILE_END);
        char szTextRet[32] = { 0 };
        bRet = ReadFile(hFile, szTextRet, sizeof(szTextRet), &dwRealRead, NULL);

        Student stud2;
        bRet = ReadFile(hFile, &stud2, sizeof(Student), &dwRealRead, NULL);
        if (bRet)
        {
                MessageBox(NULL, _T("文件读入成功"), _T("Tip"), MB_OK);
        }
        else
        {
                MessageBox(NULL, _T("文件读入失败"), _T("Tip"), MB_OK);
        }

        CloseHandle(hFile);

tony666

GetLastError 看看