只在类的头文件中加入了CArray<CPoint,CPoint>m_pointArray;一句话 运行却显示这句话有一堆错误

class CStroke:public CObject
{
public:
CStroke(UINT nPenWidth);protected:
CStroke();
DECLARE_SERIAL(CStroke);//Attributes
protected:
UINT m_nPenWidth;//one pen width applies to entire strokepublic:

CArray<CPoint,CPoint>m_pointArray;//《 -------------------错误//Operations
public:
BOOL DrawStroke(CDC* pDC);
public:
virtual void Serialize(CArchive& ar);
};