How to fix this error?

11/23/2012 15:00 ayashin0#1
PHP Code:
WndManager.obj error LNK2019unresolved external symbol "public: void __thiscall CToolTip::SetBarunaToolTip(class CItemBase *)" (?SetBarunaToolTip@CToolTip@@QAEXPAVCItemBase@@@Zreferenced in function "public: void __thiscall CWndMgr::PutToolTip_Item(class CItemBase *,class CPoint,class CRect *,int)" (?PutToolTip_Item@CWndMgr@@QAEXPAVCItemBase@@VCPoint@@PAVCRect@@H@Z)
.\..\..\
Output\Neuz.exe fatal error LNK11201 unresolved externals 
anyone can help me about this problem.
11/23/2012 17:44 Sedrika#2
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