c习题（重点难点突破）

各种习题class CLine : public CObject { public: CPoint m_ptStart; CPoint m_ptEnd; UINT m_nLineStyle; UINT m_nLineWidth; COLORREF m_cLineColor; public: CLine(); CLine(CPoint pt1, CPoint pt2,UINT m_nLineStyle,UINT m_nLineWidth,COLORREF m_cLineColor); virtual ~CLine(); void Draw(CDC *pDC); }; #endif // !defined(AFX_LINE_H__1B822AB5_6708_40E4_B6E8_B253A93DC333__INCLUDED_)