c++ - 无法访问在类'CCustomCommandLineInfo'中声明的私有(private)成员

我试图将命令行界面添加到现有的MFC应用程序中，并找到一个在线at this website类。我已根据自己的需要对其进行了调整，当我尝试构建时，出现读取"error C2248: 'CCustomCommandLineInfo::CCustomCommandLineInfo' : cannot access private member declared in class 'CCustomCommandLineInfo'"的错误，这是我的代码：

class CCustomCommandLineInfo : public CCommandLineInfo
{
  CCustomCommandLineInfo()
  {
    //m_bExport = m_bOpen = m_bWhatever = FALSE;
    m_bNoGUI = m_baMode = FALSE;
  }

  // for convenience maintain 3 variables to indicate the param passed.
  BOOL m_bNoGUI;            //for /nogui (No GUI; Command-line)
  BOOL m_baMode;            //for /adv (Advanced Mode)
 // BOOL m_bWhatever;       //for /whatever (3rd switch - for later date)

  //public methods for checking these.
public:
  BOOL NoGUI() { return m_bNoGUI; };
  BOOL aModeCmd() { return m_baMode; };
  //BOOL IsWhatever() { return m_bWhatever; };

  virtual void ParseParam(const char* pszParam, BOOL bFlag, BOOL bLast)
  {
    if(0 == strcmp(pszParam, "/nogui"))
    {
      m_bNoGUI = TRUE;
    }
    else if(0 == strcmp(pszParam, "/adv"))
    {
      m_baMode = TRUE;
    }
   // else if(0 == strcmp(pszParam, "/whatever"))
    // {
    //  m_bWhatever = TRUE;
    // }
  }
};

这就是我的InitInstance（）中的内容

// parse command line (cmdline.h)
CCustomCommandLineInfo oInfo;
ParseCommandLine(oInfo);
if(oInfo.NoGUI())
  {
    // Do something
  }
else if(oInfo.aModeCmd())
  {
    // Do whatever
  }

我将如何解决这个问题？

最佳答案

你有：

class CCustomCommandLineInfo : public CCommandLineInfo
{
  CCustomCommandLineInfo()
  {
    //m_bExport = m_bOpen = m_bWhatever = FALSE;
    m_bNoGUI = m_baMode = FALSE;
  }

这使默认构造函数成为private函数。这就是为什么您不能使用：

CCustomCommandLineInfo oInfo;

设置默认构造函数public。

class CCustomCommandLineInfo : public CCommandLineInfo
{
  public:
  CCustomCommandLineInfo()
  {
    //m_bExport = m_bOpen = m_bWhatever = FALSE;
    m_bNoGUI = m_baMode = FALSE;
  }

关于c++ - 无法访问在类'CCustomCommandLineInfo'中声明的私有(private)成员，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/30826141/