Link erro:Cannot analysis file:

error LNK2019: Can't analysis exterior Symbol: "public: char const * __thiscall TiXmlElement::Attribute(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)const " (?Attribute@TiXmlElement@@QBEPBDABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z)，the symbol in funion: "public: bool __thiscall OSMScene::initialise(char const *,class OSMSceneCallbacks *)" (?initialise@OSMScene@@QAE_NPBDPAVOSMSceneCallbacks@@@Z) was used in OgreOSMScene.obj

error LNK2019: Can't analysis exterior Symbol: "public: class TiXmlElement * __thiscall TiXmlNode::NextSiblingElement(void)const " (?NextSiblingElement@TiXmlNode@@QBEPAVTiXmlElement@@XZ)，the symbol in funion: "public: bool __thiscall OSMScene::initialise(char const *,class OSMSceneCallbacks *)" (?initialise@OSMScene@@QAE_NPBDPAVOSMSceneCallbacks@@@Z) 中被引用 OgreOSMScene.obj

error LNK2019: Can't analysis exterior Symbol: "public: class TiXmlElement * __thiscall TiXmlNode::FirstChildElement(void)const " (?FirstChildElement@TiXmlNode@@QBEPAVTiXmlElement@@XZ)，the symbol in funion: "public: bool __thiscall OSMScene::initialise(char const *,class OSMSceneCallbacks *)" (?initialise@OSMScene@@QAE_NPBDPAVOSMSceneCallbacks@@@Z) 中被引用 OgreOSMScene.obj

error LNK2019: Can't analysis exterior Symbol: "public: class TiXmlElement * __thiscall TiXmlNode::FirstChildElement(char const *)const " (?FirstChildElement@TiXmlNode@@QBEPAVTiXmlElement@@PBD@Z)，the symbol in funion: "public: bool __thiscall OSMScene::initialise(char const *,class OSMSceneCallbacks *)" (?initialise@OSMScene@@QAE_NPBDPAVOSMSceneCallbacks@@@Z) 中被引用 OgreOSMScene.obj

error LNK2019: Can't analysis exterior Symbol: "public: __thiscall TiXmlDocument::TiXmlDocument(void)" (??0TiXmlDocument@@QAE@XZ)，the symbol in funion: "public: bool __thiscall OSMScene::initialise(char const *,class OSMSceneCallbacks *)" (?initialise@OSMScene@@QAE_NPBDPAVOSMSceneCallbacks@@@Z) 中被引用 OgreOSMScene.obj

Is it lack of *.lib file? If right,Where can I download it?

You need to include the .cpp files from the TinyXml folder in your solution (see the documentation on how to integrate the oScene Loader in your application)