| 发表于：2007-04-25 13:43:165楼 得分:10 |
int wmaincrtstartup（
#else /* wprflag */
int maincrtstartup（
#endif /* wprflag */
#endif /* _winmain_ */
void
)
{
int initret;
int mainret;
osversioninfoa *posvi;
int managedapp;
#ifdef _winmain_
_tuchar *lpszcommandline;
startupinfo startupinfo;
#endif /* _winmain_ */
/*
* dynamically allocate the osversioninfoa buffer, so we avoid
* triggering the /gs buffer overrun detection. that can 't be
* used here, since the guard cookie isn 't available until we
* initialize it from here!
*/
posvi = （osversioninfoa *)_alloca（sizeof（osversioninfoa));
/*
* get the full win32 version
*/
posvi-> dwosversioninfosize = sizeof（osversioninfoa);
（void)getversionexa（posvi);
_osplatform = posvi-> dwplatformid;
_winmajor = posvi-> dwmajorversion;
_winminor = posvi-> dwminorversion;
/*
* the somewhat bizarre calculations of _osver and _winver are
* required for backward compatibility （used to use getversion)
*/
_osver = （posvi-> dwbuildnumber) & 0x07fff;
if （ _osplatform != ver_platform_win32_nt )
_osver ¦= 0x08000;
_winver = （_winmajor < < 8) + _winminor;
/*
* determine if this is a managed application
*/
managedapp = check_managed_app（);
#ifdef _mt
if （ !_heap_init（1) ) /* initialize heap */
#else /* _mt */
if （ !_heap_init（0) ) /* initialize heap */
#endif /* _mt */
fast_error_exit（_rt_heapinit); /* write message and die */
#ifdef _mt
if（ !_mtinit（) ) /* initialize multi-thread */
fast_error_exit（_rt_thread); /* write message and die */
#endif /* _mt */
/*
* initialize the runtime checks stuff
*/
#ifdef _rtc
_rtc_initialize（);
#endif /* _rtc */
/*
* guard the remainder of the initialization code and the call
* to user 's main, or winmain, function in a __try/__except
* statement.
*/
__try {
if （ _ioinit（) < 0 ) /* initialize lowio */
_amsg_exit（_rt_lowioinit);
#ifdef wprflag
/* get wide cmd line info */
_wcmdln = （wchar_t *)__crtgetcommandlinew（);
/* get wide environ info */
_wenvptr = （wchar_t *)__crtgetenvironmentstringsw（);
if （ _wsetargv（) < 0 )
_amsg_exit（_rt_spacearg);
if （ _wsetenvp（) < 0 )
_amsg_exit（_rt_spaceenv);
#else /* wprflag */
/* get cmd line info */
_acmdln = （char *)getcommandlinea（);
/* get environ info */
_aenvptr = （char *)__crtgetenvironmentstringsa（);
if （ _setargv（) < 0 )
_amsg_exit（_rt_spacearg);
if （ _setenvp（) < 0 )
_amsg_exit（_rt_spaceenv);
#endif /* wprflag */
initret = _cinit（true); /* do c data initialize */
if （initret != 0)
_amsg_exit（initret);
#ifdef _winmain_
startupinfo.dwflags = 0;
getstartupinfo（ &startupinfo );
#ifdef wprflag
lpszcommandline = _wwincmdln（);
mainret = wwinmain（
#else /* wprflag */
lpszcommandline = _wincmdln（);
mainret = winmain（
#endif /* wprflag */
getmodulehandlea（null),
null,
lpszcommandline,
startupinfo.dwflags & startf_useshowwindow
? startupinfo.wshowwindow
: sw_showdefault
);
#else /* _winmain_ */
#ifdef wprflag
__winitenv = _wenviron;
mainret = wmain（__argc, __wargv, _wenviron);
#else /* wprflag */
__initenv = _environ;
mainret = main（__argc, __argv, _environ);
#endif /* wprflag */
#endif /* _winmain_ */
if （ !managedapp )
exit（mainret);
_cexit（);
}
__except （ _xcptfilter（getexceptioncode（), getexceptioninformation（)) )
{
/*
* should never reach here
*/
mainret = getexceptioncode（);
if （ !managedapp )
_exit（mainret);
_c_exit（);
} /* end of try - except */
return mainret;
}
vc里直接跟踪一下就出来了 | | |
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