机甲旋风链刃图片:关于C++出错的一点问题

Linking...
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: virtual struct CRuntimeClass * __thiscall CMapX::GetRuntimeClass(void)const " (?GetRuntimeClass@CMapX@@UBEPAUCRuntimeClass@@XZ)
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: int __thiscall CMapXLayers::LayersDlg(struct tagVARIANT const &,struct tagVARIANT const &)" (?LayersDlg@CMapXLayers@@QAEHABUtagVARIANT@@0@Z)
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: class CMapXLayers __thiscall CMapX::GetLayers(void)" (?GetLayers@CMapX@@QAE?AVCMapXLayers@@XZ)
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: void __thiscall CMapX::PropertyPage(void)" (?PropertyPage@CMapX@@QAEXXZ)
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: void __thiscall CMapX::SetZoom(double)" (?SetZoom@CMapX@@QAEXN@Z)
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: double __thiscall CMapX::GetGeoSetWidth(void)" (?GetGeoSetWidth@CMapX@@QAENXZ)
MapxSampleView.obj : error LNK2001: unresolved external symbol "public: void __thiscall CMapX::SetCurrentTool(long)" (?SetCurrentTool@CMapX@@QAEXJ@Z)
Debug/MapxSample.exe : fatal error LNK1120: 7 unresolved externals
Error executing link.exe.

MapxSample.exe - 8 error(s), 0 warning(s)
////////////////////////////////////////////////////////////////////////////
draw.cpp
e:\毕业设计\作品\draw\drawview.h(27) : error C2061: syntax error : identifier 'UNIT'
e:\毕业设计\作品\draw\drawview.h(28) : error C2061: syntax error : identifier 'UNIT'
e:\毕业设计\作品\draw\drawview.h(29) : error C2061: syntax error : identifier 'UNIT'
drawView.cpp
e:\毕业设计\作品\draw\drawview.h(27) : error C2061: syntax error : identifier 'UNIT'
e:\毕业设计\作品\draw\drawview.h(28) : error C2061: syntax error : identifier 'UNIT'
e:\毕业设计\作品\draw\drawview.h(29) : error C2061: syntax error : identifier 'UNIT'
Generating Code...
Error executing cl.exe.

draw.exe - 6 error(s), 0 warning(s)
不知道以上两个问题应该怎么解决，谢谢各位高手了，给指点一下