大家过来帮我看看

JA.OBJ : error LNK2001: unresolved external symbol "__declspec(dllimport) long __stdcall MouseProc(int,unsigned int,long)" (__imp_?MouseProc@@YGJHIJ@Z)
JA.OBJ : error LNK2001: unresolved external symbol "__declspec(dllimport) long __stdcall KeyboardProc(int,unsigned int,long)" (__imp_?KeyboardProc@@YGJHIJ@Z)这是怎么回事啊?
各位师兄，帮我看看吧。