MFC下编写的简易画图系统

来源：互联网发布：英雄美工钢笔183 编辑：程序博客网时间：2024/04/27 18:41

主要声明及函数实现：

class CDrawDoc : public CDocument{public:CList<CPoint,CPoint&> linelist;CList<CPoint,CPoint&> rectlist;int lineCount;int rectCount;........}

class CDrawView : public CView{private:bool m_bFlag;CPoint m_headp;CPoint m_endp;CPoint *line;CPoint *rect;int lineCount;int rectCount;......}

CDrawView::CDrawView(){    // TODO: add construction code here    m_bFlag = true;    line = new CPoint[30];    rect = new CPoint[30];    lineCount = 0;    rectCount = 0;}

void CDrawView::OnDraw(CDC* pDC){    CDrawDoc* pDoc = GetDocument();    ASSERT_VALID(pDoc);    // TODO: add draw code for native data hereif(lineCount>=30){CPoint *Line = line;line = new CPoint[lineCount+30];for(int i=0;i<lineCount;i++)line[i] = Line[i];delete Line;}if(rectCount>=30)//数组动态实现{CPoint *Rect = rect;rect = new CPoint[rectCount+30];for(int i=0;i<rectCount;i++)rect[i] = Rect[i];delete Rect;}    if(m_bFlag)    {line[lineCount++]=m_headp;      //将点计入数组中line[lineCount++]=m_endp;        pDoc->linelist.AddTail(m_headp);//将点加入到链表中        pDoc->linelist.AddTail(m_endp);        pDoc->lineCount++;    }    else    {rect[rectCount++]=m_headp;rect[rectCount++]=m_endp;        pDoc->rectlist.AddTail(m_headp);        pDoc->rectlist.AddTail(m_endp);        pDoc->rectCount++;    }//for(int i=0;i<lineCount/2;i++)//{//pDC->MoveTo(line[i*2]);//pDC->LineTo(line[i*2+1]);//      }//     //      for(int j=0;j<rectCount/2;j++)//      {//      CRect rect(line[j*2],line[j*2+1]);//      pDC->Rectangle(rect);//      }// for(int j=0; j<lineCount; j++)// {// //循环打印图形，起到重绘的效果// pDC->MoveTo(m_headp);// pDC->LineTo(m_endp);// }//     for(int k=0; k<lineCount; k++)//     {//         CRect rect(m_headp,m_endp);//         pDC->Rectangle(rect);//     }    POSITION posLine;    POSITION posRect;    posLine=pDoc->linelist.GetHeadPosition();    posRect=pDoc->rectlist.GetHeadPosition();    while(posLine!=NULL)    {        m_headp=pDoc->linelist.GetNext(posLine);        m_endp=pDoc->linelist.GetNext(posLine);        pDC->MoveTo(m_headp);        pDC->LineTo(m_endp);    }    while (posRect!=NULL)    {        m_headp=pDoc->rectlist.GetNext(posRect);        m_endp=pDoc->rectlist.GetNext(posRect);        pDC->Rectangle(&CRect(m_headp,m_endp));    }}

void CDrawView::OnLButtonDown(UINT nFlags, CPoint point){    // TODO: Add your message handler code here and/or call default    m_headp = point;    CView::OnLButtonDown(nFlags, point);}void CDrawView::OnLButtonUp(UINT nFlags, CPoint point){    // TODO: Add your message handler code here and/or call default    m_endp = point;    Invalidate();    CView::OnLButtonUp(nFlags, point);}void CDrawView::OnAppLine(){    // TODO: Add your command handler code here    m_bFlag = true;//修改属性画直线}void CDrawView::OnAppRect(){    // TODO: Add your command handler code here    m_bFlag = false;//修改属性画矩形}

void CDrawDoc::Serialize(CArchive& ar){if (ar.IsStoring()){// TODO: add storing code here}else{// TODO: add loading code here}linelist.Serialize(ar);//打开保存串行化实现rectlist.Serialize(ar);}

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