runtimeexception.cpp

串口通信mfc源码

#include "StdAfx.h"
#include "RuntimeException.h"

#ifndef _WINERROR_
#pragma message("To avoid this message, please put WinError.h in your PCH (normally stdafx.h)")
#include <WinError.h>
#endif

BOOL CRuntimeException::GetErrorMessage(LPTSTR pstrError, UINT nMaxError, PUINT pnHelpContext)
{
	ASSERT(pstrError != NULL && AfxIsValidString(pstrError, nMaxError));

	if (pnHelpContext != NULL)
		*pnHelpContext = 0;
	if(m_dwError!=0)
	{
		LPTSTR lpBuffer;
		BOOL bRet = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
			NULL,  m_dwError, MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),
			reinterpret_cast<LPTSTR>(&lpBuffer), 0, NULL);

		if (bRet == FALSE)
			*pstrError = '\0';
		else
		{
			//StringCchCopyN(pstrError, nMaxError, lpBuffer, nMaxError);
			lstrcpyn(pstrError, lpBuffer, nMaxError);

			bRet = TRUE;
			LocalFree(lpBuffer);
		}

		return bRet;
	}
	else 
	{
		ASSERT(m_lpszErrorMessage!= NULL);
		lstrcpyn(pstrError, m_lpszErrorMessage, nMaxError);
		//StringCchCopyN(pstrError, nMaxError, m_lpszErrorMessage, nMaxError);
		return TRUE;
	}

	TRACE(_T("Error:%s\n"),pstrError);
}

CString CRuntimeException::GetErrorMessage()
{
	CString rVal;
	LPTSTR pstrError = rVal.GetBuffer(4096);
	GetErrorMessage(pstrError, 4096, NULL);
	rVal.ReleaseBuffer();
	return rVal;
}

DWORD CRuntimeException::GetErrorCode() const
{
	return m_dwError;
}

CRuntimeException::CRuntimeException(DWORD dwError)
{
	ASSERT(dwError!=0);
	m_dwError = dwError;
	m_lpszErrorMessage = NULL;
}

CRuntimeException::CRuntimeException(LPCTSTR lpszErrorMessage)
{
	ASSERT(lpszErrorMessage!=NULL);
	m_lpszErrorMessage = lpszErrorMessage;
	m_dwError =0;
}

IMPLEMENT_DYNAMIC(CRuntimeException, CException)

#ifdef _DEBUG
void CRuntimeException::Dump(CDumpContext& dc) const
{
	CObject::Dump(dc);

	dc << "m_dwError = " << m_dwError;
}
#endif