dllonexit.md

description	title	ms.date	api_name	api_location	api_type	topic_type	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: __dllonexit	__dllonexit	11/04/2016	__dllonexit	msvcrt.dll msvcr110.dll msvcr110_clr0400.dll msvcr100.dll msvcr80.dll msvcr120.dll msvcr90.dll msvcr120_clr0400.dll	DLLExport	apiref	__dllonexit	__dllonexit	708f2ceb-f95c-46b0-a58d-d68b3fa36f12

__dllonexit

Registers a routine to be called at exit time.

Syntax

_onexit_t __dllonexit(
   _onexit_t func,
   _PVFV **  pbegin,
   _PVFV **  pend
   );

Parameters

func
Pointer to a function to be executed upon exit.

pbegin
Pointer to a variable that points to the beginning of a list of functions to execute on detach.

pend
Pointer to variable that points to the end of a list of functions to execute on detach.

Return value

If successful, a pointer to the user's function. Otherwise, a NULL pointer.

Remarks

The __dllonexit function is analogous to the _onexit function except that the global variables used by that function aren't visible to this routine. Instead of global variables, this function uses the pbegin and pend parameters.

The _onexit and atexit functions in a DLL linked with MSVCRT.LIB must maintain their own atexit/_onexit list. This routine is the worker that gets called by such DLLs.

The _PVFV type is defined as typedef void (__cdecl *_PVFV)(void).

Requirements

Routine	Required file
__dllonexit	onexit.c

See also

_onexit, _onexit_m