seh-filter-dll-seh-filter-exe.md

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Learn more about: _seh_filter_dll, _seh_filter_exe	_seh_filter_dll, _seh_filter_exe	4/2/2020	_XcptFilter _seh_filter_dll _seh_filter_exe _o__seh_filter_dll _o__seh_filter_exe	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-runtime-l1-1-0.dll	DLLExport	apiref	XcptFilter _XcptFilter _seh_filter_dll _seh_filter_exe corecrt_startup/_seh_filter_exe corecrt_startup/_seh_filter_dll	XcptFilter function _XcptFilter function _seh_filter_dll function _seh_filter_exe function	747e5963-3a12-4bf5-b5c4-d4c1b6068e15

_seh_filter_dll, _seh_filter_exe

Identifies the exception and the related action to be taken.

Syntax

int __cdecl _seh_filter_dll(
   unsigned long exceptionNum,
   struct _EXCEPTION_POINTERS* exceptionPtr
);
int __cdecl _seh_filter_exe(
   unsigned long exceptionNum,
   struct _EXCEPTION_POINTERS* exceptionPtr
);

Parameters

exceptionNum
The identifier for the exception.

exceptionPtr
A pointer to the exception information.

Return value

An integer that indicates the action to be taken, based on the result of exception processing.

Remarks

These methods are called by the exception-filter expression of the try-except Statement. The method consults a constant internal table to identify the exception and determine the appropriate action, as shown here. The exception numbers are defined in winnt.h and the signal numbers are defined in signal.h.

Exception number (unsigned long)	Signal number
STATUS_ACCESS_VIOLATION	SIGSEGV
STATUS_ILLEGAL_INSTRUCTION	SIGILL
STATUS_PRIVILEGED_INSTRUCTION	SIGILL
STATUS_FLOAT_DENORMAL_OPERAND	SIGFPE
STATUS_FLOAT_DIVIDE_BY_ZERO	SIGFPE
STATUS_FLOAT_INEXACT_RESULT	SIGFPE
STATUS_FLOAT_INVALID_OPERATION	SIGFPE
STATUS_FLOAT_OVERFLOW	SIGFPE
STATUS_FLOAT_STACK_CHECK	SIGFPE
STATUS_FLOAT_UNDERFLOW	SIGFPE

By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.

Requirements

Header: corecrt_startup.h

See also

Alphabetical function reference