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Description of CSeException

CSeException class is based on CException class provided by MFC. I overwrite some of useful methods, but it is working same way like any other exception class based on CException class - you can find description in documentation provided by Visual C++.

By Martin Ziacek 

Source Files :

//////////////////////////////////////////////////////////////////////////<br /> // SeException.h By Martin Ziacek</p> <p>#ifndef __SEEXCEPTION_H__<br /> #define __SEEXCEPTION_H__</p> <p>class CSeException : public CException<br /> {<br /> DECLARE_DYNAMIC(CSeException)<br /> public:<br /> CSeException(UINT nSeCode, _EXCEPTION_POINTERS* pExcPointers);<br /> CSeException(CSeException & CseExc);</p> <p> _EXCEPTION_POINTERS* GetSePointers(void);<br /> PVOID GetExceptionAddress(void);</p> <p> UINT GetSeCode(void);<br /> void Delete(void);<br /> int ReportError(UINT nType = MB_OK, UINT nIDHelp = 0);<br /> BOOL GetErrorMessage(CString & CsErrDescr, PUINT pnHelpContext = NULL);<br /> BOOL GetErrorMessage(LPTSTR lpszError, UINT nMaxError, PUINT pnHelpContext = NULL);<br /> private:<br /> UINT m_nSeCode;<br /> _EXCEPTION_POINTERS* m_pExcPointers;<br /> };</p> <p>void SeTranslator(UINT nSeCode, _EXCEPTION_POINTERS* pExcPointers);</p> <p>#endif //__SEEXCEPTION_H__

//////////////////////////////////////////////////////////////////////////<br /> // SeException.cpp By Martin Ziacek</p> <p>#include "stdafx.h"<br /> #include "SeException.h"</p> <p>#ifdef _DEBUG<br /> #define new DEBUG_NEW<br /> #endif</p> <p>#undef THIS_FILE<br /> static char THIS_FILE[] = __FILE__;</p> <p>#define CASE(nSeCode,CsString) case EXCEPTION_##nSeCode: /<br /> CsString.Format(_T("Exception %s (0x%.8x) at address 0x%.8x."),_T(#nSeCode),EXCEPTION_##nSeCode,m_pExcPointers->ExceptionRecord->ExceptionAddress); /<br /> break;</p> <p>void SeTranslator(UINT nSeCode, _EXCEPTION_POINTERS* pExcPointers)<br /> {<br /> throw new CSeException(nSeCode,pExcPointers);<br /> }</p> <p>IMPLEMENT_DYNAMIC(CSeException,CException)</p> <p>CSeException::CSeException(UINT nSeCode, _EXCEPTION_POINTERS* pExcPointers)<br /> {<br /> m_nSeCode = nSeCode;<br /> m_pExcPointers = pExcPointers;<br /> }</p> <p>CSeException::CSeException(CSeException & CseExc)<br /> {<br /> m_nSeCode = CseExc.m_nSeCode;<br /> m_pExcPointers = CseExc.m_pExcPointers;<br /> }</p> <p>UINT CSeException::GetSeCode()<br /> {<br /> return m_nSeCode;<br /> }</p> <p>_EXCEPTION_POINTERS* CSeException::GetSePointers()<br /> {<br /> return m_pExcPointers;<br /> }</p> <p>PVOID CSeException::GetExceptionAddress()<br /> {<br /> return m_pExcPointers->ExceptionRecord->ExceptionAddress;<br /> }</p> <p>void CSeException::Delete(void)<br /> {<br /> #ifdef _DEBUG<br /> m_bReadyForDelete = TRUE;<br /> #endif<br /> delete this;<br /> }</p> <p>int CSeException::ReportError(UINT nType/* = MB_OK*/, UINT nIDHelp/* = 0*/)<br /> {<br /> int rc;<br /> CString strMessage;</p> <p> GetErrorMessage(strMessage);<br /> rc = AfxMessageBox(strMessage,nType,nIDHelp);</p> <p> return rc;<br /> }</p> <p>BOOL CSeException::GetErrorMessage(CString & CsErrDescr, PUINT pnHelpContext/* = NULL*/)<br /> {<br /> BOOL rc = TRUE;</p> <p> if (pnHelpContext != NULL)<br /> *pnHelpContext = 0;</p> <p> switch (m_nSeCode) {<br /> CASE(ACCESS_VIOLATION,CsErrDescr);<br /> CASE(DATATYPE_MISALIGNMENT,CsErrDescr);<br /> CASE(BREAKPOINT,CsErrDescr);<br /> CASE(SINGLE_STEP,CsErrDescr);<br /> CASE(ARRAY_BOUNDS_EXCEEDED,CsErrDescr);<br /> CASE(FLT_DENORMAL_OPERAND,CsErrDescr);<br /> CASE(FLT_DIVIDE_BY_ZERO,CsErrDescr);<br /> CASE(FLT_INEXACT_RESULT,CsErrDescr);<br /> CASE(FLT_INVALID_OPERATION,CsErrDescr);<br /> CASE(FLT_OVERFLOW,CsErrDescr);<br /> CASE(FLT_STACK_CHECK,CsErrDescr);<br /> CASE(FLT_UNDERFLOW,CsErrDescr);<br /> CASE(INT_DIVIDE_BY_ZERO,CsErrDescr);<br /> CASE(INT_OVERFLOW,CsErrDescr);<br /> CASE(PRIV_INSTRUCTION,CsErrDescr);<br /> CASE(IN_PAGE_ERROR,CsErrDescr);<br /> CASE(ILLEGAL_INSTRUCTION,CsErrDescr);<br /> CASE(NONCONTINUABLE_EXCEPTION,CsErrDescr);<br /> CASE(STACK_OVERFLOW,CsErrDescr);<br /> CASE(INVALID_DISPOSITION,CsErrDescr);<br /> CASE(GUARD_PAGE,CsErrDescr);<br /> CASE(INVALID_HANDLE,CsErrDescr);<br /> default:<br /> CsErrDescr = _T("Unknown exception.");<br /> rc = FALSE;<br /> break;<br /> }</p> <p> return rc;<br /> }</p> <p>BOOL CSeException::GetErrorMessage(LPTSTR lpszError, UINT nMaxError, PUINT pnHelpContext/* = NULL*/)<br /> {<br /> ASSERT(lpszError != NULL && AfxIsValidString(lpszError, nMaxError));</p> <p> if (pnHelpContext != NULL)<br /> *pnHelpContext = 0;</p> <p> CString strMessage;<br /> GetErrorMessage(strMessage);</p> <p> if ((UINT)strMessage.GetLength() >= nMaxError) {<br /> lpszError[0] = 0;<br /> return FALSE;<br /> } else {<br /> lstrcpyn(lpszError, strMessage, nMaxError);<br /> return TRUE;<br /> }<br /> }

Demo Project:

void CSehDemoDlg::OnBtnCreateException()<br /> {<br /> char *p = NULL;<br /> try<br /> {<br /> p[0] = 0;<br /> }<br /> catch(CSeException *e)<br /> {<br /> TCHAR trcMsg[1024];<br /> e->GetErrorMessage(trcMsg,1024);<br /> TRACE(trcMsg);<br /> TRACE(_T("/n"));<br /> e->ReportError(MB_OK | MB_ICONSTOP);<br /> e->Delete();<br /> }<br /> }

The Result:

From: http://www.codeproject.com/KB/cpp/seexception.aspx