[求助]：有关ARX的AcGeNurbSurface类的引入问题

wsfeng990002

已经包含了头文件，也将头文件和库加入到vc路径中，但是使用AcGeNurbSurface的时候，编译出现了以下错误，是什么没有设置对？？请高手帮忙。
Linking...
   Creating library Debug/wsfengPointTest.lib and object Debug/wsfengPointTest.exp
PointTestCommands.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall AcGeNurbSurface::AcGeNurbSurface(int,int,int,int,int,int,class AcGePoint3d const * const,double const * const,class AcGeKnotVector const &,cl
ass AcGeKnotVector const &,class AcGeTol const &)" (__imp_??0AcGeNurbSurface@@QAE@HHHHHHQBVAcGePoint3d@@QBNABVAcGeKnotVector@@2ABVAcGeTol@@@Z)
PointTestCommands.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall AcGeNurbSurface::AcGeNurbSurface(void)" (__imp_??0AcGeNurbSurface@@QAE@XZ)
Debug/wsfengPointTest.arx : fatal error LNK1120: 2 unresolved externals
Error executing link.exe.
Creating browse info file...

wsfengPointTest.arx - 3 error(s), 0 warning(s)

lz2010573

好象是动态库出现了问题，lib文件出错，你试一试，
我要问一下你：
  AcGeKnotVector(

int size,

int growSize,

double eps = 1.e-9);

size Input size of allocation for sequence
growSize Input size of future allocation increments
eps Equal knot tolerance

Constructs an empty sequence with some allocation of memory for a sequence.

能不能具体解释一下，三个参数的意义？

wsfeng990002

AcGeKnotVector 是 使用AcGeNurbSurface时用到的，在ARX帮助文档中有说明：
如果：AcGeNurbSurface* s = new AcGeNurbSurface();  
就会出现连接错误，我以前有个例子却能编译通过。如果只有上面的代码时出错信息是：
Creating library Debug/wsfengNurbSurfaceTest.lib and object Debug/wsfengNurbSurfaceTest.exp
NurbSurfaceTestCommands.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: __thiscall AcGeNurbSurface::AcGeNurbSurface(void)" (__imp_??0AcGeNurbSurface@@QAE@XZ)
Debug/wsfengNurbSurfaceTest.arx : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.