レジストリへのC++の書き込みは私のコードでは機能しませんか？

Question

私の友人と私はレジストリを変更するためにこのコードを書いていますが、実行するとレジストリに値を書き込むのではなく、正しく設定されているかどうかを確認するだけです。 プログラムの前に正しく設定されている場合は、ポップアップが表示されません。 レジストリキーが一致していない場合、プログラムは正しいレジストリ値を書き込むはずですが、現時点では機能しません。理由はありません。

ここに完全なコードです：

if (version.dwMajorVersion >= 6) 
{ 
    HKEY ErrMode; 
    LONG res = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SYSTEM\\ControlSet001\\Control\\Windows", 0, KEY_READ | KEY_WRITE, &ErrMode); 
    if (res == ERROR_SUCCESS) 
    { 
     DWORD ErrorMode; 
     DWORD DRlen = sizeof(DWORD); 
     DWORD SUlen = sizeof(DWORD); 
     if (RegQueryValueEx(ErrMode, "ErrorMode", 0, NULL, (LPBYTE)&ErrorMode, &DRlen) == ERROR_SUCCESS) 
     { 
      if (ErrorMode != 2) // any of errormode is non-2 
      { 
       if (MessageBox(NULL, "Windows Error Reporting is still turned on.\r\nThis program may not work correctly with reporting turned on. Shall I disable it?\r\nNote:The readme explains how you can disable and enable Error Reporting under Windows)","Windows Error Reporting:", 
        MB_YESNO | MB_ICONQUESTION | MB_APPLMODAL) == IDYES) 
       { 
        ErrorMode = 2; // change local 
        DRlen = sizeof(DWORD); 
        SUlen = sizeof(DWORD); 
        if (RegSetValueEx(ErrMode,"ErrorMode",2, REG_DWORD, (LPBYTE)&ErrorMode, DRlen) != ERROR_SUCCESS) 
        { 
         char* buff = new char[1024]; 
         FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,0,res,0,buff,1024,0); 
         MessageBox(NULL, buff,"Error...", MB_OK | MB_ICONEXCLAMATION); 
         delete[] buff; 
         ok = false; 
        } 
       } 
       else 
        ok = false; 
      }   
     } 
     if (RegCloseKey(ErrMode) != ERROR_SUCCESS) 
      MessageBox(NULL, "Could not close Registry Key handle.","Error...",MB_OK | MB_ICONEXCLAMATION); 
    } 
    else 
    { 
     char* buff = new char[1024]; 
     FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,0,res,0,buff,1024,0); 
     CString message; 
     message.Format("Could not read from registry. Make sure you have either turned off error reporting\r\nor that you run this program from a privileged account.\r\nError: %s",buff); 
     MessageBox(NULL, message.GetBuffer(),"Error...",MB_OK | MB_ICONEXCLAMATION); 
     delete[] buff; 
     ok = false; 
    } 
    HKEY DontSUI; 
    res = RegOpenKeyEx(HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\Windows Error Reporting", 0, KEY_READ | KEY_WRITE, &DontSUI); 
    if (res == ERROR_SUCCESS) 
    { 
     DWORD DontShowUI; 
     DWORD DRlen = sizeof(DWORD); 
     DWORD SUlen = sizeof(DWORD); 
     if (RegQueryValueEx(DontSUI, "DontShowUI", 0, NULL, (LPBYTE)&DontShowUI, &DRlen) == ERROR_SUCCESS) 
     { 
      if (DontShowUI != 1) // any of DontShowUI is non 1 
      { 
       if (MessageBox(NULL, "Windows Error Reporting is still turned on.\r\nThis program may not work correctly with reporting turned on. Shall I disable it?\r\nNote:The readme explains how you can disable and enable Error Reporting under Windows)","Windows Error Reporting:", 
        MB_YESNO | MB_ICONQUESTION | MB_APPLMODAL) == IDYES) 
       { 
        DontShowUI = 1; // change local 
        DRlen = sizeof(DWORD); 
        SUlen = sizeof(DWORD); 
        if (RegSetValueEx(DontSUI,"DontShowUI",1, REG_DWORD, (LPBYTE)&DontShowUI, DRlen) != ERROR_SUCCESS) 
        { 
         char* buff = new char[1024]; 
         FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,0,res,0,buff,1024,0); 
         MessageBox(NULL, buff,"Error...", MB_OK | MB_ICONEXCLAMATION); 
         delete[] buff; 
         ok = false; 
        } 
       } 
       else 
        ok = false; 
      }   
     } 
     if (RegCloseKey(DontSUI) != ERROR_SUCCESS) 
      MessageBox(NULL, "Could not close Registry Key handle.","Error...",MB_OK | MB_ICONEXCLAMATION); 
    } 
    else 
    { 
     char* buff = new char[1024]; 
     FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,0,res,0,buff,1024,0); 
     CString message; 
     message.Format("Could not read from registry. Make sure you have either turned off error reporting\r\nor that you run this program from a privileged account.\r\nError: %s",buff); 
     MessageBox(NULL, message.GetBuffer(),"Error...",MB_OK | MB_ICONEXCLAMATION); 
     delete[] buff; 
     ok = false; 
    } 
    if (!ok) 
    { 
     MessageBox(NULL,"Windows Error Reporting may still be active.\r\nThis program may not function correctly.","Warning",MB_ICONWARNING |MB_OK); 
    } 
} 

Answer 1

2、あなたのコード内で使用していたのではなく、instructed in MSDNとして、0からRegSetValueEx()にお電話でReservedパラメータを設定してみてください。

Answer 2

HKEY_LOCAL_MACHINEはシステムの位置です。 「通常の」ユーザーとしては、そこに書き込む権限がありません。管理者権限が必要です。