HINSTANCE hMod=::LoadLibrary(subfilename);
typedef void (*pWizardNew)(CDrawObjList& list,CDocument* m_pDoc,CString strPath);
pWizardNew WizardNew=(pWizardNew)GetProcAddress(hMod,"WizardNew");
WizardNew(pDoc->m_objects,pDoc,m_select);  
上面代码中WizardNew必须定义为导出函数才可以吗?