写入注册表

 1 void CHkeyTestDlg::OnBnClickedButton2()
 2 {
 3     // TODO: 在此添加控件通知处理程序代码
 4     HKEY hKey;
 5     HKEY hTempKey;
 6     DWORD dwValue=6;
 7     DWORD dwSize=sizeof(DWORD);
 8     DWORD dwType=REG_DWORD;
 9 
10     LPCTSTR data_Set=_T("Software");
11     if(ERROR_SUCCESS==::RegOpenKeyEx(HKEY_CURRENT_USER,data_Set,0,KEY_SET_VALUE,&hKey))
12     {
13         if(ERROR_SUCCESS==::RegCreateKey(hKey,_T("test111"),&hTempKey))
14         {
15             if (ERROR_SUCCESS!=::RegSetValueEx(hTempKey,_T("Name"),0,REG_DWORD,(CONST BYTE*)&dwValue,sizeof(DWORD)))
16             {
17                 AfxMessageBox(_T("错误"));
18                 ::RegCloseKey(hKey);
19                 return;
20             }
21         }
22     }
23     ::RegCloseKey(hKey);
24 }

 参考：https://blog.csdn.net/yu12345678900/article/details/45442947