以前编译通过,现在再编出错 error LNK2005 异常,大家帮忙看看

以前编译通过,现在再编出错 error LNK2005 错误,大家帮忙看看
一个工程,以前编译通过,时隔几个月再编,出现很多error LNK2005错误, 向大家请教

mpl.obj : error LNK2005: _CLSID_BQ_SRCFilter already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IDShowPlugin already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMNetShowPreroll already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMMediaContent2 already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMMediaContent already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMExtendedErrorInfo already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMNetShowExProps already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMExtendedSeeking already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMNetworkStatus already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMChannelInfo already defined in DxGraph.obj
mpl.obj : error LNK2005: _IID_IAMNetShowConfig already defined in DxGraph.obj
mpl.obj : error LNK2005: _LIBID_QuartzNetTypeLib already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IDShowPlugin already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMNetShowPreroll already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMMediaContent2 already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMMediaContent already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMExtendedErrorInfo already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMNetShowExProps already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMExtendedSeeking already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMNetworkStatus already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMChannelInfo already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _IID_IAMNetShowConfig already defined in DxGraph.obj
StdAfx.obj : error LNK2005: _LIBID_QuartzNetTypeLib already defined in DxGraph.obj
AsyncFilter.obj : error LNK2005: _CLSID_BQ_SRCFilter already defined in DxGraph.obj
AsyncFilter.obj : error LNK2005: _IID_IDShowPlugin already defined in DxGraph.obj
AsyncFilter.obj : error LNK2005: _IID_IAMNetShowPreroll already defined in DxGraph.obj
AsyncFilter.obj : error LNK2005: _IID_IAMMediaContent2 already defined in DxGraph.obj

------解决方案--------------------
文件包含问题，重复定义
------解决方案--------------------
文件包含问题，重复定义。注释掉包含文件或者包含文件中的定义试试？
------解决方案--------------------
把obj文件全删掉，rebuild all看看
------解决方案--------------------
既然弄好，就应该说明原因，“结贴去...”
------解决方案--------------------
是的，一群人巴着你给点分啊，呵呵……