绘图程序代码.doc

绘图程序代码文档类：(1). class CDrawDoc : public CDocument public: /定义数据成员COLORREF m_color; /颜色CRect m_rectGraph; /矩形CPoint m_OldPoint,m_NewPoint,m_LastPoint; /直线int m_nType; /选择的画法类型CPoint m_Curve1000; /随手画int m_nCurveCount;(2). BOOL CDrawDoc:OnNewDocument() /文档类中初始化变量if (!CDocument:OnNewDocument()return FALSE;/ TODO: add reinitialization code here/ (SDI documents will reuse this document)m_color=RGB(0,0,0);m_rectGraph=CRect(0,0,0,0);m_nType=1;m_nCurveCount=0;return TRUE;(3). void CDrawDoc:Serialize(CArchive& ar) /文档类的序列化函数为保存和读出代码if (ar.IsStoring()/ TODO: add storing code herearm_color;arm_LastPoint;arm_NewPoint;arm_nType;arm_OldPoint;arm_nCurveCount;arm_rectGraph;for(int i=0;im_nCurveCount;i+)arm_color;arm_LastPoint;arm_NewPoint;arm_nType;arm_OldPoint;arm_nCurveCount;arm_rectGraph;for(int i=0;im_Curvei;视图类:(4). class CDrawView : public CViewprivate:BOOL m_bCaptured; /捕捉标志/自定义的刷新函数，用于调整矩形的坐标，确保矩形的第二对坐标参数大于第一对 void MyInvalidateRect(CRect rect,BOOL bErase=TRUE);(5). CDrawView:CDrawView() /视图类构造函数初始化变量/ TODO: add construction code herem_bCaptured=FALSE;(6). void CDrawView:OnDraw(CDC* pDC) /绘图CDrawDoc* pDoc = GetDocument();ASSERT_VALID(pDoc);/ TODO: add draw code for native data hereCPen newPen,*oldPen;newPen.CreatePen(PS_SOLID,1,pDoc-m_color); /创建选定颜色的绘图笔oldPen=pDC-SelectObject(&newPen);switch(pDoc-m_nType)case 1: /画直线pDC-MoveTo(pDoc-m_OldPoint);pDC-LineTo(pDoc-m_NewPoint);break;case 2: /绘制矩形pDC-Rectangle(pDoc-m_rectGraph);break;case 3: /绘制圆pDC-Ellipse(pDoc-m_rectGraph);break;case 4: /绘制随手画if(pDoc-m_nCurveCount0)pDC-MoveTo(pDoc-m_Curve0);for(int j=1;jm_nCurveCount;j+)pDC-LineTo(pDoc-m_Curvej);break;pDC-SelectObject(oldPen);菜单消息处理函数:(7). void CDrawView:OnSelectEllipse() /与画圆子菜单对应的消息处理函数/ TODO: Add your command handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pDoc-m_nType=3;void CDrawView:OnUpdateSelectEllipse(CCmdUI* pCmdUI) /修改画圆子菜单对应的消息处理函数/ TODO: Add your command update UI handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pCmdUI-SetCheck(pDoc-m_nType=3);void CDrawView:OnSelectFree() /与随手画子菜单对应的消息处理函数/ TODO: Add your command handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pDoc-m_nType=4;void CDrawView:OnUpdateSelectFree(CCmdUI* pCmdUI)/修改随手画子菜单对应的消息处理函数 / TODO: Add your command update UI handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pCmdUI-SetCheck(pDoc-m_nType=4);void CDrawView:OnSelectLine()/与画线子菜单对应的消息处理函数 / TODO: Add your command handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pDoc-m_nType=1;void CDrawView:OnUpdateSelectLine(CCmdUI* pCmdUI)/修改画线子菜单对应的消息处理函数 / TODO: Add your command update UI handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pCmdUI-SetCheck(pDoc-m_nType=1);void CDrawView:OnSelectRect()/与画矩形子菜单对应的消息处理函数 / TODO: Add your command handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pDoc-m_nType=2;void CDrawView:OnUpdateSelectRect(CCmdUI* pCmdUI)/修改画矩形子菜单对应的消息处理函数 / TODO: Add your command update UI handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);pCmdUI-SetCheck(pDoc-m_nType=2);void CDrawView:OnColor() /显示颜色对话框处理函数/ TODO: Add your command handler code hereCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);CColorDialog dlg;if(dlg.DoModal()=IDOK)pDoc-m_color=dlg.GetColor(); /取颜色对话框颜色鼠标消息处理函数:(8). void CDrawView:OnLButtonDown(UINT nFlags, CPoint point) /鼠标按下消息处理函数 / TODO: Add your message handler code here and/or call defaultCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);if(pDoc-m_nType=1&pDoc-m_nTypem_OldPoint=point; /取画线起始点、续点、区域pDoc-m_NewPoint=point;pDoc-m_rectGraph=CRect(point,point); if(pDoc-m_nType=4)pDoc-m_Curve0=point; /随手画的第一个点pDoc-m_nCurveCount=1; /随手画的所有点计数Invalidate();CView:OnLButtonDown(nFlags, point);void CDrawView:OnMouseMove(UINT nFlags, CPoint point)/鼠标移动消息处理函数 / TODO: Add your message handler code here and/or call defaultCDrawDoc* pDoc=GetDocument();ASSERT_VALID(pDoc);if(m_bCaptured)if(pDoc-m_nType=1&pDoc-m_nTypem_rectGraph);pDoc-m_rectGraph=CRect(pDoc-m_OldPoint,point);pDoc-m_NewPoint=point;InvalidateRect(pDoc-m_rectGraph);elseif(pDoc-m_nCurveCountm_OldPoint=pDoc-m_NewPoint;pDoc-m_NewPoint=point;pDoc-m_rectGraph=CRect(pDoc-m_OldPoint,pDoc-m_NewPoint);pDoc-m_CurvepDoc-m_nCurveCount=point;pDoc-m_nCurveCount+;InvalidateRect(pDoc-m_rectGraph);CView:OnMouse