C / C++ / MFC

error C2327: 'ABC::m_strErrorMessageText' : is not a type name, static, or enumerator

class ABC
{
 public:
  CString        m_strErrorMessageText;
  const char*    GetErrorMessageText(){ return ( (const char*)m_strErrorMessageText ); }

 class DEF 
 {
   public:
     enum tagSource 
     {  INIT, 
        TERMINATE, 
        OPEN, 
        SQL
     } Source;
     char        m_lpErrorText[256];

    DEF(tagSource src){Source = src;}
  };

  class GHI
  {
    public:
error->      GHI() { m_strErrorMessageText = "Registry Information is missing.  Please run BATCH_CONFIG.EXE to correct."; }
};