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///////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/seh.h
// Purpose: declarations for SEH (structured exceptions handling) support
// Author: Vadim Zeitlin
// Created: 2006-04-26
// Copyright: (c) 2006 Vadim Zeitlin <vadim@wxwindows.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MSW_SEH_H_
#define _WX_MSW_SEH_H_
#if wxUSE_ON_FATAL_EXCEPTION
// the exception handler which should be called from the exception filter
//
// it calsl wxApp::OnFatalException() if possible
extern unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs);
// helper macro for wxSEH_HANDLE
#if defined(__BORLANDC__) || (defined(__VISUALC__) && (__VISUALC__ <= 1200))
// some compilers don't understand that this code is unreachable and warn
// about no value being returned from the function without it, so calm them
// down
#define wxSEH_DUMMY_RETURN(rc) return rc;
#else
#define wxSEH_DUMMY_RETURN(rc)
#endif
// macros which allow to avoid many #if wxUSE_ON_FATAL_EXCEPTION in the code
// which uses them
#define wxSEH_TRY __try
#define wxSEH_IGNORE __except ( EXCEPTION_EXECUTE_HANDLER ) { }
#define wxSEH_HANDLE(rc) \
__except ( wxGlobalSEHandler(GetExceptionInformation()) ) \
{ \
/* use the same exit code as abort() */ \
::ExitProcess(3); \
\
wxSEH_DUMMY_RETURN(rc) \
}
#else // wxUSE_ON_FATAL_EXCEPTION
#define wxSEH_TRY
#define wxSEH_IGNORE
#define wxSEH_HANDLE(rc)
#endif // wxUSE_ON_FATAL_EXCEPTION
#if wxUSE_ON_FATAL_EXCEPTION && defined(__VISUALC__) && !defined(__WXWINCE__)
#include <eh.h>
// C++ exception to structured exceptions translator: we need it in order
// to prevent VC++ from "helpfully" translating structured exceptions (such
// as division by 0 or access violation) to C++ pseudo-exceptions
extern void wxSETranslator(unsigned int code, EXCEPTION_POINTERS *ep);
// up to VC 12 this warning ("calling _set_se_translator() requires /EHa")
// is harmless and it's easier to suppress it than use different makefiles
// for VC5 and 6 (which don't support /EHa at all) and VC7+ (which does
// accept it but it seems to change nothing for it anyhow)
#if __VISUALC__ < 1900
#pragma warning(disable: 4535)
#endif
// note that the SE translator must be called wxSETranslator!
#define DisableAutomaticSETranslator() _set_se_translator(wxSETranslator)
#else // !__VISUALC__
// the other compilers do nothing as stupid by default so nothing to do for
// them
#define DisableAutomaticSETranslator()
#endif // __VISUALC__/!__VISUALC__
#endif // _WX_MSW_SEH_H_
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