c+实习报告学生学籍成绩管理系统+画线

1、实习题目一一、【需求规格说明】1、题目描述： 利用鼠标在视图上绘制线，能够设置线的颜色和宽度； 能够用鼠标拾取绘制的某条线，被选中的线能够高亮显示，并且弹出对话框，输入线的属性保存起来； 能够将绘制的线数据保存在Line.dat文本文件中； 打开线数据文件Line.dat，可以显示出文件里面的线图形。2、问题分析： 通过获取鼠标在显示界面的坐标，运用MoveTo()以及LineTO()函数，绘制出画线；通过调用GetColor()函数，调用系统的调色板，将获得的信息传到程序中，改变画线的颜色；通过改变宽度函数的变量，来改变画线的宽度。 首先获取鼠标的坐标，通过计算，在右击鼠标后，在鼠标有限的距

2、离之内的画线有效,然后选定，然后再调用相应的函数来改变选定直线的属性。 用CFile 定义一个对象，通过对象调用Open（）函数来打开保存的文件。文件的保存是先用Open（）函数，然后再保存要保存的数据。二、【算法设计】、基本思想在视图中画好线后，存在文档里面，再从文档存到磁盘，打开文件时，从磁盘到文档，由OnDraw()函数调用重绘函数进行重绘。程序设计：/ DrawView.h : interface of the CDrawView class#if !defined(AFX_DRAWVIEW_H_D9CAA283_2CAD_4A04_86EE_42FBE886F459_INCLUDED

3、_)#define AFX_DRAWVIEW_H_D9CAA283_2CAD_4A04_86EE_42FBE886F459_INCLUDED_#if _MSC_VER 1000#pragma once#endif / _MSC_VER 1000class CDrawView : public CViewpublic:void ChangeLine(CPoint point);public:BOOL m_bIsLine; /记录是否处于画线状态CPoint point0; /记录线段起点坐标int m_nStep; /记录画线的操作步数CPoint point1; /记录线段终点坐标 COLOR

4、REF m_nLineColor; /线条颜色int m_nLineWidth; /线条宽度int i; /循环控制变量BOOL ClickSaveButton; /点击自己的保存时给它赋值为假int drawmodel; /划线模式 0:D-U-D 1:D-D CString filename; /用于存取已绘制的图像的文件名BOOL m_nChange; /选中线，改变属性BOOL m_nChangeReDraw; /选中进行重绘/protected: / create from serialization onlyCDrawView();DECLARE_DYNCREATE(CDrawVi

5、ew)/ Attributespublic:CDrawDoc* GetDocument(); / Operationspublic:/ Overrides/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CDrawView)public:virtual void OnDraw(CDC* pDC); / overridden to draw this viewvirtual BOOL PreCreateWindow(CREATESTRUCT& cs);protected:virtual BOOL OnPreparePri

6、nting(CPrintInfo* pInfo);virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);/AFX_VIRTUAL/ Implementationpublic:virtual CDrawView();#ifdef _DEBUGvirtual void AssertValid() const;virtual void Dump(CDumpContext& dc) const;#endifprotected:/

7、Generated message map functionsprotected:/AFX_MSG(CDrawView)afx_msg void OnDrawLine();afx_msg void OnUpdateDrawLine(CCmdUI* pCmdUI);afx_msg void OnSetColor();afx_msg void OnSetWidth();afx_msg void OnLButtonDown(UINT nFlags, CPoint point);afx_msg void OnMouseMove(UINT nFlags, CPoint point);afx_msg BO

8、OL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);afx_msg void OnRButtonDown(UINT nFlags, CPoint point);afx_msg void OnDeleteLine();afx_msg void OnSave();afx_msg void OnOpen();afx_msg void OnClear();afx_msg void OnLButtonUp(UINT nFlags, CPoint point);afx_msg void OnDownUpDown();afx_msg void On

9、DownUP();afx_msg void OnChange();afx_msg void OnUpdateChange(CCmdUI* pCmdUI);afx_msg void OnChangeReDraw();/AFX_MSGDECLARE_MESSAGE_MAP();#ifndef _DEBUG / debug version in DrawView.cppinline CDrawDoc* CDrawView:GetDocument() return (CDrawDoc*)m_pDocument; #endif/AFX_INSERT_LOCATION/ Microsoft Visual

10、C+ will insert additional declarations immediately before the previous line.#endif / DrawDoc.h : interface of the CDrawDoc class#if !defined(AFX_DRAWDOC_H_1959C5D8_A40D_4E17_AE59_A7650B71CC9F_INCLUDED_)#define AFX_DRAWDOC_H_1959C5D8_A40D_4E17_AE59_A7650B71CC9F_INCLUDED_#if _MSC_VER 1000#pragma once#

11、endif / _MSC_VER 1000#include using namespace std;class CDrawDoc : public CDocumentpublic:void SetWindowCwnd(CWnd *pcWnd); CWnd* m_cWndView;public:vector distance; /距离vector StorePoint; /存入点COLORREF color50;int width50;/=void DrawLines(CDC *pDC);protected: / create from serialization onlyCDrawDoc();

12、DECLARE_DYNCREATE(CDrawDoc)/ Attributespublic:/ Operationspublic:/ Overrides/ ClassWizard generated virtual function overrides/AFX_VIRTUAL(CDrawDoc)public:virtual BOOL OnNewDocument();virtual void Serialize(CArchive& ar);/AFX_VIRTUAL/ Implementationpublic:virtual CDrawDoc();#ifdef _DEBUGvirtual void

13、 AssertValid() const;virtual void Dump(CDumpContext& dc) const;#endifprotected:/ Generated message map functionsprotected:/AFX_MSG(CDrawDoc)/AFX_MSGDECLARE_MESSAGE_MAP();/AFX_INSERT_LOCATION/ Microsoft Visual C+ will insert additional declarations immediately before the previous line.#endif / !defin

14、ed(AFX_DRAWDOC_H_1959C5D8_A40D_4E17_AE59_A7650B71CC9F_INCLUDED_)/ DrawDoc.cpp : implementation of the CDrawDoc class#include stdafx.h#include Draw.h#include DrawDoc.h#include DrawView.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CDrawDocIMPLEMENT_DYNCREAT

15、E(CDrawDoc, CDocument)BEGIN_MESSAGE_MAP(CDrawDoc, CDocument)/AFX_MSG_MAP(CDrawDoc)/AFX_MSG_MAPEND_MESSAGE_MAP()/ CDrawDoc construction/destructionCDrawDoc:CDrawDoc()/ TODO: add one-time construction code hereCDrawDoc:CDrawDoc()BOOL CDrawDoc:OnNewDocument()if (!CDocument:OnNewDocument()return FALSE;/

16、 TODO: add reinitialization code here/ (SDI documents will reuse this document)return TRUE;/ CDrawDoc serializationvoid CDrawDoc:Serialize(CArchive& ar)if (ar.IsStoring() / TODO: add storing code here int NumOfPoint=(int)StorePoint.size(); arNumOfPoint; for(int i=0;iNumOfPoint;i+=2) arStorePointiSto

17、rePointi+1; arwidthiNumOfPoint; for(int i=0;ipoint0point1; StorePoint.push_back(CPoint(point0); StorePoint.push_back(CPoint(point1); arwidthicolori;/ CDrawDoc diagnostics#ifdef _DEBUGvoid CDrawDoc:AssertValid() constCDocument:AssertValid();void CDrawDoc:Dump(CDumpContext& dc) constCDocument:Dump(dc)

18、;#endif /_DEBUG/ CDrawDoc commandsvoid CDrawDoc:DrawLines(CDC *pDC)int NumOfPoint=(int)StorePoint.size();for (int j=0;jSelectObject(& newPen);/将画笔选入设备环境，同时保存旧画笔 /=/pDC-MoveTo(StorePointj);pDC-LineTo(StorePointj+1);pDC-SelectObject(pOldPen); /绘图完毕后恢复原有环境void SetWindowCwnd(CWnd *pcWnd) CWnd* m_cWndVie

19、w;m_cWndView = pcWnd; / DrawView.cpp : implementation of the CDrawView class#include stdafx.h#include Draw.h#include math.h#include DrawDoc.h#include DrawView.h#include SetWidthDlg.h#include NameFileDlg.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CDrawVi

20、ewIMPLEMENT_DYNCREATE(CDrawView, CView)BEGIN_MESSAGE_MAP(CDrawView, CView)/AFX_MSG_MAP(CDrawView)ON_COMMAND(ID_DrawLine, OnDrawLine)ON_UPDATE_COMMAND_UI(ID_DrawLine, OnUpdateDrawLine)ON_COMMAND(ID_SetColor, OnSetColor)ON_COMMAND(ID_SetWidth, OnSetWidth)ON_WM_LBUTTONDOWN()ON_WM_MOUSEMOVE()ON_WM_SETCU

21、RSOR()ON_WM_RBUTTONDOWN()ON_COMMAND(ID_DeleteLine, OnDeleteLine)ON_COMMAND(ID_SAVE, OnSave)ON_COMMAND(ID_OPEN, OnOpen)ON_COMMAND(ID_CLEAR, OnClear)ON_WM_LBUTTONUP()ON_COMMAND(ID_DownUpDown, OnDownUpDown)ON_COMMAND(ID_DownUP, OnDownUP)ON_COMMAND(ID_Change, OnChange)ON_UPDATE_COMMAND_UI(ID_Change, OnU

22、pdateChange)ON_COMMAND(ID_ChangeReDraw, OnChangeReDraw)/AFX_MSG_MAP/ Standard printing commandsON_COMMAND(ID_FILE_PRINT, CView:OnFilePrint)ON_COMMAND(ID_FILE_PRINT_DIRECT, CView:OnFilePrint)ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView:OnFilePrintPreview)END_MESSAGE_MAP()/ CDrawView construction/destructi

23、onCDrawView:CDrawView()/ TODO: add construction code herem_bIsLine=FALSE; /开始没有处于画线状态 point0=point1=(0,0);/线段的起点坐标初始为0m_nStep=0; /操作步数初始为0m_nLineWidth=1; /线宽为1i=0; /循环控制变量ClickSaveButton=TRUE; /是否已经保存filename=_T(); /存磁盘时的文件名m_nChange=FALSE; /是否选中m_nChangeReDraw=FALSE; /是否每次进行重绘CDrawView:CDrawView()B

24、OOL CDrawView:PreCreateWindow(CREATESTRUCT& cs)/ TODO: Modify the Window class or styles here by modifying/ the CREATESTRUCT csreturn CView:PreCreateWindow(cs);/ CDrawView drawingvoid CDrawView:OnDraw(CDC* pDC)CDrawDoc* pDoc = GetDocument();ASSERT_VALID(pDoc);/ TODO: add draw code for native data he

25、repDoc-DrawLines(pDC);/ CDrawView printingBOOL CDrawView:OnPreparePrinting(CPrintInfo* pInfo)/ default preparationreturn DoPreparePrinting(pInfo);void CDrawView:OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)/ TODO: add extra initialization before printingvoid CDrawView:OnEndPrinting(CDC* /*pDC

26、*/, CPrintInfo* /*pInfo*/)/ TODO: add cleanup after printing/ CDrawView diagnostics#ifdef _DEBUGvoid CDrawView:AssertValid() constCView:AssertValid();void CDrawView:Dump(CDumpContext& dc) constCView:Dump(dc);CDrawDoc* CDrawView:GetDocument() / non-debug version is inlineASSERT(m_pDocument-IsKindOf(R

27、UNTIME_CLASS(CDrawDoc);return (CDrawDoc*)m_pDocument;#endif /_DEBUG/ CDrawView message handlersvoid CDrawView:OnDrawLine() / TODO: Add your command handler code hereif(drawmodel != 0 & drawmodel != 1)MessageBox(请下先在视图中画图);if(m_bIsLine=FALSE)m_bIsLine=TRUE; /允许画线elsem_bIsLine=FALSE; /中止画线void CDrawVi

28、ew:OnUpdateDrawLine(CCmdUI* pCmdUI) / TODO: Add your command update UI handler code herepCmdUI-SetCheck(m_bIsLine); /控制用户界面更(新菜单项和工具栏的画线按钮处于选中未选中状态)void CDrawView:OnSetColor() / TODO: Add your command handler code hereCColorDialog dlg; /系统颜色对话框if(dlg.DoModal()=IDOK)m_nLineColor=dlg.GetColor(); void

29、CDrawView:OnSetWidth() / TODO: Add your command handler code hereSetWidthDlg dlg;if(dlg.DoModal()=IDOK)m_nLineWidth=dlg.m_nLineWidth;void CDrawView:OnLButtonDown(UINT nFlags, CPoint point) / TODO: Add your message handler code here and/or call defaultCDrawDoc* pDoc = GetDocument();CDC *pDC = GetDC()

30、;CClientDC dc(this); /获取设备环境if(m_nChange|m_nChangeReDraw)ChangeLine(point);else /= CPen newPen(PS_SOLID,m_nLineWidth,m_nLineColor); /画线前创建一支画笔 CPen *pOldPen=dc.SelectObject(& newPen); /将画笔选入设备环境，同时保存旧画笔 /=; if(m_bIsLine) /若处于画线状态 if(m_nStep = 0) point0=point; m_nStep+; /操作步数加1 pDoc-StorePoint.push_b

31、ack(point0); else if(m_nStep = 1 & drawmodel = 0) /如果是终点,则画线 dc.MoveTo(point0); dc.LineTo(point); point1=point; pDoc-StorePoint.push_back(point1); pDoc-colori=m_nLineColor; pDoc-widthi=m_nLineWidth; /= m_nStep=0; /画线完毕后，操作步数立即归0 point0=point1=(0,0); /画线完毕后，起点坐标立即归0 /一条线段画完后，终点坐标归0 i+=2; else dc.Sele

32、ctObject(pOldPen); / 绘图完毕后恢复原有环境 ReleaseDC(pDC);if(ClickSaveButton=FALSE) pDoc-SetModifiedFlag(TRUE); /表明文档被修改，当未保存文件而关闭程序时，就会弹出对话框询问是否保存CView:OnLButtonDown(nFlags, point);void CDrawView:OnMouseMove(UINT nFlags, CPoint point) / TODO: Add your message handler code here and/or call defaultCClientDC dc

33、(this); /获取设备环境CPen newPen(PS_SOLID,m_nLineWidth,m_nLineColor); /画线前创建一支画笔 CPen *pOldPen=dc.SelectObject(& newPen); /将画笔选入设备环境，同时保存旧画笔if(m_nStep!=0) /第一次点击鼠标之后，m_nStep=1,则拉出橡皮条dc.SetROP2(R2_NOT); /设置线条模式R2_NOTXORPEN/R2_NOTif(point1!=CPoint(0,0)/保留最后一次画的线，之前擦出（也就是重画一次）dc.MoveTo(point0);dc.LineTo(poin

34、t1); /更新终点的坐标 point1=point; /画出新的线段(最后一次画的那条) dc.MoveTo(point0); dc.LineTo(point1);CView:OnMouseMove(nFlags, point);/设置光标的函数BOOL CDrawView:OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) / TODO: Add your message handler code here and/or call default if(m_bIsLine) /若处于画线状态,则使用Windows系统的IDC_CROSS

35、十字光标HCURSOR hCursor;if(m_nChange=true|m_nChangeReDraw=true) /需选中线条改变属性时把光标改为箭头hCursor=AfxGetApp()-LoadStandardCursor(IDC_ARROW);/加载光标else hCursor=AfxGetApp()-LoadStandardCursor(IDC_CROSS);/加载光标 SetCursor(hCursor); return TRUE;return CView:OnSetCursor(pWnd, nHitTest, message);/*IDC_CROSS 标志十字光标IDC_AR

36、ROW 标志箭头光标IDC_IBEAM I型光标IDC_NO 禁止光标IDC_APPSTARTING 标志箭头光标附带沙漏IDC_SIZEALL 四向箭头光标IDC_SIZENESW 东北，西南方向斜线箭头光标IDC_SIZENS 南北方向箭头光标IDC_SIZENWSE 西北，东南方向斜线箭头光标IDC_SIZEWE 东西方向箭头光标 IDC_UPARROW 向上箭头光标IDC_WAIT 沙漏光标 */void CDrawView:OnRButtonDown(UINT nFlags, CPoint point) / TODO: Add your message handler code he

37、re and/or call defaultm_bIsLine=FALSE; /m_nStep=0;i=0;CView:OnRButtonDown(nFlags, point);/删除所在屏幕上的线条void CDrawView:OnDeleteLine() / TODO: Add your command handler code hereCDrawDoc* pDoc = GetDocument(); CDC *pDC = GetDC();pDC-SetROP2(R2_NOT);pDoc-DrawLines(pDC); OnClear(); i=0; /相当于清空color和width pD

38、oc-StorePoint.clear(); /清空存点 容器/用白颜色清空屏幕区域void CDrawView:OnClear() / TODO: Add your command handler code hereCDrawDoc* pDoc = GetDocument();CDC *pDC=GetDC(); CRect rect;this-GetClientRect(&rect);pDC-SetROP2(R2_WHITE);/(R2_BLACK);pDC-Rectangle(&rect);ReleaseDC(pDC);i=0; pDoc-StorePoint.clear();/存文件到磁

39、盘啊void CDrawView:OnSave() / TODO: Add your command handler code her NameFileDlg dlg;if(dlg.DoModal()=IDOK) filename=dlg.m_FileName;CDrawDoc* pDoc = GetDocument(); ClickSaveButton=TRUE; /退出画图程序时系统不会弹出是否保存的提示 CFile f;f.Open(filename,CFile:modeCreate|CFile:modeReadWrite); CArchive ar(&f,CArchive:store)

40、; int NumOfPoint=(int)pDoc-StorePoint.size();if(NumOfPoint!=0)arNumOfPoint; for(int i=0;iNumOfPoint;i+=2) arStorePointi)StorePointi+1); arwidthi)colori);ar.Close(); f.Close(); MessageBox(文件+filename+已经存好);elseMessageBox(对不起!你还没有画线);/打开磁盘文件void CDrawView:OnOpen() / TODO: Add your command handler code

41、 hereCDC *pDC = GetDC();CDrawDoc* pDoc = GetDocument();CFile f;if(f.Open(filename,CFile:modeRead)=FALSE)return;CArchive ar(&f,CArchive:load); if(!ar.IsStoring()int NumOfPoint=(int)(pDoc-StorePoint.size(); arNumOfPoint; for(int i=0;ipoint0point1; pDoc-StorePoint.push_back(point0); pDoc-StorePoint.pus

42、h_back(point1); ar(pDoc-widthi)(pDoc-colori);pDoc-DrawLines(pDC); ar.Close(); f.Close();void CDrawView:OnLButtonUp(UINT nFlags, CPoint point) / TODO: Add your message handler code here and/or call defaultCDrawDoc* pDoc =GetDocument();CClientDC dc(this); /获取设备环境/= CPen newPen(PS_SOLID,m_nLineWidth,m_

43、nLineColor); /画线前创建一支画笔CPen *pOldPen=dc.SelectObject(& newPen); /将画笔选入设备环境，同时保存旧画笔/=if(m_nStep = 1 & drawmodel = 1) /若处于画线状态dc.MoveTo(point0);dc.LineTo(point);point1=point;pDoc-StorePoint.push_back(point1);pDoc-colori=m_nLineColor;pDoc-widthi=m_nLineWidth;/=m_nStep=0; /画线完毕后，操作步数立即归0 point0=point1=(0,0);/画线完毕后，起点坐标立即归0 /一条线段画完后，终点坐标归0 i+=2;dc.SelectObject(pOldPen)