///////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/seh.h
-// Purpose: helpers for the structured exception handling (SEH) under Win32
+// Purpose: declarations for SEH (structured exceptions handling) support
// Author: Vadim Zeitlin
-// Modified by:
-// Created: 13.07.2003
+// Created: 2006-04-26
// RCS-ID: $Id$
-// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
+// Copyright: (c) 2006 Vadim Zeitlin <vadim@wxwindows.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MSW_SEH_H_
#define _WX_MSW_SEH_H_
-#include "wx/defs.h"
-
#if wxUSE_ON_FATAL_EXCEPTION
-// ----------------------------------------------------------------------------
-// wxSEHReport: this class is used as a namespace for the SEH-related functions
-// ----------------------------------------------------------------------------
-
-struct WXDLLIMPEXP_BASE wxSEHReport
-{
- // set the name of the file to which the report is written, it is
- // constructed from the .exe name by default
- static void SetFileName(const wxChar *filename);
+ // the exception handler which should be called from the exception filter
+ //
+ // it calsl wxApp::OnFatalException() if possible
+ extern unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs);
- // return the current file name
- static const wxChar *GetFileName();
+ // helper macro for wxSEH_HANDLE
+#if 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
- // write the exception report to the file, return true if it could be done
- // or false otherwise
- static bool Generate();
-};
+ // 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
-#endif // _WX_MSW_SEH_H_
+#if 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 7.1 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__ <= 1310
+ #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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