Ubisys 7047, Reference Manual

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const long m_lReturn;
Contains the unmodified return value of the API function that failed.
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const std::string m_strOperation;
Contains the name of the operation (e.g. API function) which failed.
9.2.7.2. Virtual Methods Overrides
The implementation based on the C++ class std::exception overrides the what() method:
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virtual const char *what() const ;
The method returns a plain “CSmartCardException”, without the “std” prefix.
The MFC-based implementation overrides the GetErrorMessage() method:
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virtual BOOL GetErrorMessage(LPTSTR lpszError, UINT nMaxError,
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PUNIT pnHelpContext = NULL);
The method returns a formatted error message, including the operation which failed, the API error code
and the translated, human-readable error cause.