我收到了“错误C2039：'_ file'：不是'_iobuf'的成员”当我试图从VS2010迁移到VS2015时如何解决它？ [英] I am getting "error C2039: '_file': is not a member of '_iobuf'" when i tried to migrate from VS2010 to VS2015 how to resolve it?

问题描述

#ifdef WIN32

int CMXReader :: Fseek（FILE * stream，__ int64 Offset，int origin）

#else

int CMXReader :: Fseek（FILE * stream，off_t Offset，int origin）

#endif

{

#ifdef WIN32

long int handle;

__ int64错误;

#else

int error;

#endif



#ifdef WIN32

handle = stream-> _file;



// error = _lseeki64（handle，Offset，origin）;

错误= VFSEEK（流，偏移，来源）;
$
#else

#ifdef SGI

error = fseek64（stream，Offset，origin）;

#else

error = fseek（stream，Offset，origin）;
$
#endif

#endif



if（error == -1）

return（-1）;

否则b
return（0）;

}

#ifdef WIN32
int CMXReader::Fseek( FILE *stream, __int64 Offset, int origin )
#else
int CMXReader::Fseek( FILE *stream, off_t Offset, int origin )
#endif
{
#ifdef WIN32
long int handle;
__int64 error;
#else
int error;
#endif

#ifdef WIN32
handle = stream->_file;

//error = _lseeki64( handle, Offset, origin );
error = VFSEEK(stream,Offset,origin);
#else
#ifdef SGI
error = fseek64( stream, Offset, origin );
#else
error = fseek( stream, Offset, origin );
#endif
#endif

if ( error == -1 )
return( -1 );
else
return( 0 );
}

推荐答案

#ifdef WIN32

int CMXReader :: Fseek（FILE * stream，__ int64 Offset，int origin）

#else

int CMXReader :: Fseek（FILE * stream，off_t Offset，int origin）

#endif

{

#ifdef WIN32

long int handle;

__ int64错误;

#else

int error;

#endif



#ifdef WIN32

handle = stream-> ; _file;
$


// error = _lseeki64（handle，Offset，origin）;

错误= VFSEEK（流，偏移，来源）;

#else

＃ ifdef SGI

error = fseek64（stream，Offset，origin）;

#else

error = fseek（stream，Offset，origin）;

#endif

#endif



if（error == -1）

return（-1）;

else

return（0）;

}

#ifdef WIN32
int CMXReader::Fseek( FILE *stream, __int64 Offset, int origin )
#else
int CMXReader::Fseek( FILE *stream, off_t Offset, int origin )
#endif
{
#ifdef WIN32
long int handle;
__int64 error;
#else
int error;
#endif

#ifdef WIN32
handle = stream->_file;

//error = _lseeki64( handle, Offset, origin );
error = VFSEEK(stream,Offset,origin);
#else
#ifdef SGI
error = fseek64( stream, Offset, origin );
#else
error = fseek( stream, Offset, origin );
#endif
#endif

if ( error == -1 )
return( -1 );
else
return( 0 );
}

参见
https://connect.microsoft.com / VisualStudio / feedback / details / 1419290 / file-is-not-a-member-of-iobuf-bug

如果y你想获得一个文件desriptor你可以使用
_fileno function

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