39ad820bee
Don't let unhandled Win32 (i.e. structured) exceptions escape from wxWndProc() as they can just disappear into thin air when running under WOW64 as 32 bit exceptions can't propagate through 64 bit kernel. So catch them immediately and pass them to the global handler while we have the chance to do it, as we're never going to get it in the outer __try/__catch block in wxEntry() in src/msw/main.cpp. In particular, this allows to catch crashes in wxEVT_PAINT handlers, such as the one in debughlp sample, again. Closes #16656.
73 lines
3.0 KiB
C
73 lines
3.0 KiB
C
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/msw/seh.h
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// Purpose: declarations for SEH (structured exceptions handling) support
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// Author: Vadim Zeitlin
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// Created: 2006-04-26
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// Copyright: (c) 2006 Vadim Zeitlin <vadim@wxwindows.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_MSW_SEH_H_
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#define _WX_MSW_SEH_H_
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#if wxUSE_ON_FATAL_EXCEPTION
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// the exception handler which should be called from the exception filter
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//
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// it calls wxApp::OnFatalException() if wxTheApp object exists
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WXDLLIMPEXP_BASE unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs);
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// helper macro for wxSEH_HANDLE
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#if defined(__BORLANDC__)
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// some compilers don't understand that this code is unreachable and warn
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// about no value being returned from the function without it, so calm them
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// down
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#define wxSEH_DUMMY_RETURN(rc) return rc;
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#else
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#define wxSEH_DUMMY_RETURN(rc)
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#endif
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// macros which allow to avoid many #if wxUSE_ON_FATAL_EXCEPTION in the code
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// which uses them
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#define wxSEH_TRY __try
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#define wxSEH_IGNORE __except ( EXCEPTION_EXECUTE_HANDLER ) { }
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#define wxSEH_HANDLE(rc) \
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__except ( wxGlobalSEHandler(GetExceptionInformation()) ) \
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{ \
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/* use the same exit code as abort() */ \
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::ExitProcess(3); \
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\
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wxSEH_DUMMY_RETURN(rc) \
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}
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#else // wxUSE_ON_FATAL_EXCEPTION
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#define wxSEH_TRY
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#define wxSEH_IGNORE
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#define wxSEH_HANDLE(rc)
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#endif // wxUSE_ON_FATAL_EXCEPTION
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#if wxUSE_ON_FATAL_EXCEPTION && defined(__VISUALC__) && !defined(__WXWINCE__)
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#include <eh.h>
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// C++ exception to structured exceptions translator: we need it in order
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// to prevent VC++ from "helpfully" translating structured exceptions (such
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// as division by 0 or access violation) to C++ pseudo-exceptions
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extern void wxSETranslator(unsigned int code, EXCEPTION_POINTERS *ep);
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// up to VC 12 this warning ("calling _set_se_translator() requires /EHa")
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// is harmless and it's easier to suppress it than deal with it as make/
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// project file level as it seems to be harmless
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#if __VISUALC__ < 1900
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#pragma warning(disable: 4535)
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#endif
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// note that the SE translator must be called wxSETranslator!
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#define DisableAutomaticSETranslator() _set_se_translator(wxSETranslator)
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#else // !__VISUALC__
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// the other compilers do nothing as stupid by default so nothing to do for
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// them
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#define DisableAutomaticSETranslator()
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#endif // __VISUALC__/!__VISUALC__
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#endif // _WX_MSW_SEH_H_
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