VC程序设计试题作业

1、word四、使用MFC编写带菜单和工具栏的文本框编辑程序，支持复制、剪切和粘贴功能，以及文件翻开、保存功能。(20分)资源列表：编程资源资源类别标题ID关联变量类型关联变量名称MENU菜单IDR_MENU1MENUDIALOG对话框NotePadIDD_NOTEPAD_DIALOGDIALOGCNotePadDlg菜单-翻开子菜单翻开ID_FILE_OPENCFileDialog filedlg菜单-保存子菜单保存ID_FILE_SAVECFile file菜单-另存为子菜单另存为ID_FILE_SAVE_ASCFileDialog CFilefiledlgfile菜单-退出子菜单退出ID_F

2、ILE_EXITEndDialogEndDialog菜单-复制子菜单复制ID_EDIT_COPYCEdit *pEdit菜单-粘贴子菜单粘贴ID_EDIT_PASTECEdit *pEdit菜单-剪切子菜单剪切ID_EDIT_CUTCEdit *pEdit菜单-删除子菜单删除ID_EDIT_CLEARCEdit *pEdit菜单-撤销子菜单撤销ID_EDIT_UNDOCEdit *pEdit程序运行效果：主界面：翻开、保存、另存为效果：复制、粘贴、剪切效果：除此之外还实现了全选功能、删除功能，可以全选文本内容和删除内容，还实现了撤销等功能。程序主要代码：/重载OnClose()实现X的退出功能

3、void CNotePadDlg:OnClose() OnFileExit();/这里调用菜单下的退出函数/EndDialog(IDCANCEL);/CDialog:OnClose();/实现菜单栏目下 复制的功能void CNotePadDlg:OnEditCopy() CEdit * pEdit = (CEdit*)GetDlgItem(IDC_TEXT); pEdit->Copy();/实现菜单栏目下 删除的功能void CNotePadDlg:OnEditClear() CEdit * pEdit = (CEdit*)GetDlgItem(IDC_TEXT);pEdit->

4、Clear();/实现菜单栏目下 撤销的功能void CNotePadDlg:OnEditUndo() CEdit* pEdit = (CEdit*)GetDlgItem(IDC_TEXT);pEdit ->Undo();/实现菜单栏目下 剪切的功能void CNotePadDlg:OnEditCut() CEdit* pEdit = (CEdit*)GetDlgItem(IDC_TEXT);pEdit ->Cut();/实现菜单栏目下 全选的功能void CNotePadDlg:OnEditSelectAll() CEdit* pEdit = (CEdit*)GetDlgItem

5、(IDC_TEXT);pEdit ->SetSel(0,-1);/实现菜单栏目下 粘贴的功能void CNotePadDlg:OnEditPaste() CEdit* pEdit = (CEdit*)GetDlgItem(IDC_TEXT);pEdit ->Paste();/实现菜单栏目下 时间的功能void CNotePadDlg:OnEditDate() CTime t = CTime:GetCurrentTime();CString str = t.Format("%Y年%m月%d日 %H:%M:%S");CEdit* pEdit = (CEdit*)Ge

6、tDlgItem(IDC_TEXT);pEdit ->ReplaceSel( str,TRUE);/实现移动窗口大小的功能；记得修改窗口属性当中的值void CNotePadDlg:OnSize(UINT nType, int cx, int cy) CDialog:OnSize(nType, cx, cy);CWnd* pEdit = GetDlgItem(IDC_TEXT);if(pEdit)pEdit->MoveWindow(0,0,cx,cy);/实现菜单下退出的功能void CNotePadDlg:OnFileExit() if(Prompt() = 0) /如果等于0，

7、代表选择了取消，那么不关闭对话框/不做任何处理else/如果不等于0 那么代表选择了 否 直接关闭对话框EndDialog(IDCANCEL);/实现菜单栏目下翻开的功能void CNotePadDlg:OnFileOpen() /过滤器LPCTSTR szFilter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*|"/翻开一个文件选择对话框 TRUE代表 翻开文件CFileDialog filedlg(TRUE,"txt","11",OFN_PATHMUSTEXIST|OFN_FILEMUSTEXIST,sz

8、Filter);if(IDCANCEL= filedlg.DoModal()return;/翻开文件并显示到IDC_TEXT当中OpenFile(filedlg.GetPathName(),filedlg.GetFileName();/实现菜单栏目下保存的功能void CNotePadDlg:OnFileSave() /如果要保存的文件是第一次保存，那么就转换到 另存为if(m_szCurrentFile.GetLength() = 0)OnFileSaveAs();return;CFile file;if(file.Open(m_szCurrentFile,CFile:modeWrite|C

9、File:modeCreate) = 0)OnFileSaveAs();return;CString szText;GetDlgItemText(IDC_TEXT,szText);/得到Edit控件里面的内容file.Write(szText,szText.GetLength();/写入file对象file.Close();/关闭对象CEdit* pEdit = (CEdit*)GetDlgItem(IDC_TEXT) ;pEdit ->SetModify(FALSE);/FALSE表示文本没有改变；这里直接保存，点击退出的时候不要再提示改变/实现菜单栏目下另存为的功能void CNot

10、ePadDlg:OnFileSaveAs() LPCTSTR szFilter = "文本文件(*.txt)|*.txt|所有文件(*.*)|*.*|"/初始化文件对话框 FALSE代表保存文件CFileDialog filedlg(FALSE,"txt","11",OFN_OVERWRITEPROMPT|OFN_PATHMUSTEXIST|OFN_FILEMUSTEXIST|OFN_CREATEPROMPT,szFilter);/翻开文件对话框if(IDCANCEL = filedlg.DoModal()return;/得到文件对话

11、框中选择文件的路径名CString szFile = filedlg.GetPathName();/声明一个CFile对象CFile file;/翻开文件if( file.Open(szFile,CFile:modeWrite|CFile:modeCreate) = 0)MessageBox(filedlg.GetFileName()+"保存文件时失败!", NULL,MB_ICONEXCLAMATION);return;/当前文件为该文件，保存下来m_szCurrentFile = szFile;CString strText;/得到IDC_TEXT控件里面的内容 Get

12、DlgItemText(IDC_TEXT,strText);/文件写入，第一个参数是要写入的内容，第二个是写入内容的长度file.Write(strText,strText.GetLength();file.Flush();/上面的解释跟去除了，我看这个就明白了，相信你也一样file.Close();/关闭文件，删除对象！CEdit* pEdit = (CEdit*)GetDlgItem(IDC_TEXT);pEdit ->SetModify(FALSE);SetTitle();/处理文件修改的情况BOOL CNotePadDlg:Prompt()CEdit* pEdit = (CEdi

13、t*)GetDlgItem(IDC_TEXT);if(pEdit->GetModify()/如果文件被修改CString str;if(m_szCurrentFile.IsEmpty()/如果当前的文件为空，那么str= 无标题str = "无标题"elsestr = m_szCurrentFile; /否那么就是 现在翻开文件的Pathint nRet = MessageBox(str+"rn已经被修改，是否保存？","提示消息",MB_YESNOCANCEL|MB_ICONEXCLAMATION);if(IDCANCEL =

14、 nRet)/如果选择了 取消，那么不做任何处理，也不关闭对话框(在退出函数中做处理)return FALSE;if(IDNO = nRet) /如果选择了 否 直接关闭对话框在退出函数当中做处理return TRUE;else/如果选择了 是 保存文件 OnFileSave();return TRUE;/设置上面的标题void CNotePadDlg:SetTitle()CString str;if(m_szCurrentFile.IsEmpty()str = "无标题"elsestr = m_szCurrentFile;int i = str.ReverseFind(&

15、#39;'); /反向找到 if(i > 0)str = str.Mid(i+1); /从位置处 截出str后面的内容SetWindowText(str);.word五、使用API编写绘图程序如下列图。(20分)要求：在“形状列表框中选择要绘制图形，在“笔颜色下拉列表框选择画笔的颜色，在“刷子颜色下拉列表框中选择画刷的颜色。在“线型组合框选择画笔的线型，在“填充类型中选择画刷填充类型。单击“绘图 按钮按照前面的选项绘制图形，单击“退出按钮退出程序。资源列表：资源名称资源类别标题ID号关联变量消息响应函数变量类型变量名称绘图形状 列表框控件形状IDC_LIST1CStringm_D

16、rawType;afx_msg void OnSelchangeList1();笔颜色下拉框控件笔颜色IDC_COMBO1CStringm_outColorafx_msg void onRadioBtnGroup1Clicked();刷子颜色下拉框控件刷子颜色IDC_COMBO2CStringm_inColorafx_msg void onRadioBtnGroup2Clicked();线型Radio button实线IDM_LINE_STYLE_SOLIDIntm_penTypeafx_msg void onRadioBtnGroup1Clicked();Radio button虚线IDM_

17、LINE_STYLE_DASHRadio button点线IDM_LINE_STYLE_DOTRadio button点划线IDM_LINE_STYLE_DASHDOT填充类型Radio button实体刷子PS_SOLIDIntm_brushTypeafx_msg void onRadioBtnGroup2Clicked();Radio button交叉线HS_CROSSRadio button主对角线型HS_FDIAGONALRadio button附对角线型HS_BDIAGONAL程序运行效果：以黑色为背景绘制线：绘制圆：绘制矩形：绘制圆角矩形程序代码：变量定义局部：protected:

18、HICON m_hIcon;CBrush m_brush;/用于自定义颜色CDC m_memDC;/屏幕DC兼容的内存DCCBitmap m_Bmp;/位图CWnd* m_pDrawWnd;/用于保存静态文本框的对象指针/ 初始化和双缓冲相关的数据void InitialDBB();/双缓冲内存上绘图void DrawOnMem();/在静态区域画图void DrawOnStaticArea();/更改颜色的消息响应函数afx_msg HBRUSH OnCtlColor(CDC *pDC, CWnd *pWnd, UINT nCtlColor);/ 生成的消息映射函数virtual BOOL

19、OnInitDialog();afx_msg void OnSysCommand(UINT nID, LPARAM lParam);afx_msg void OnPaint();afx_msg HCURSOR OnQueryDragIcon();DECLARE_MESSAGE_MAP()public:/ 控制笔颜色的下拉框列表变量CComboBox m_Combobox1;/ 控制刷子颜色的下拉框列表变量CComboBox m_Combobox2;/ 形状列表CListBox m_ShapeList;/ 画笔类型，即轮廓索引int m_penType;/ 画刷类型，即填充颜色类型int m_b

20、rushType;afx_msg void OnBnClickedOk();afx_msg void OnBnClickedCancel();afx_msg void onRadioBtnGroup1Clicked();afx_msg void onRadioBtnGroup2Clicked();/ 绘制的图形类型CString m_DrawType;afx_msg void OnSelchangeList1();afx_msg void OnCbnSelchangeCombo1();afx_msg void OnCbnSelchangeCombo2();/bool变量，用于控制绘图按钮点击后

21、绘图bool isDraw;/ 外轮廓颜色CString m_outColor;/ 内填充颜色CString m_inColor;COLORREF outColor;COLORREF inColor;CPen myPen;CBrush myBrush;其他主要代码：/双缓冲内存上绘图void CfiveDlg:DrawOnMem()CRect rect;/画图局部-if (isDraw = true)CBrush* pOldBrush = m_memDC.SelectObject(&myBrush);/设置绘制图形CRect drawRect;drawRect.left = rect.

22、left + 30;drawRect.right = rect.right - 30;drawRect.top = rect.top + 30;drawRect.bottom = rect.bottom - 30;if(m_DrawType = "Circle")m_memDC.Ellipse(drawRect); /画椭圆if (m_DrawType = "Rectangle")m_memDC.Rectangle(drawRect); /画矩形if (m_DrawType = "Line") /画线m_memDC.MoveTo(re

23、ct.right - 40, rect.bottom - 40);m_memDC.LineTo(rect.left + 40, rect.top + 40);if (m_DrawType = "RoundRectangle") /画圆角矩形CRect r;r = CRect(CPoint(40, 40), CSize(150, 12);m_memDC.RoundRect(drawRect, CPoint(50, 50); /CPoint(50, 50)表示圆角的幅度m_memDC.SelectObject(pOldPen);m_memDC.SelectObject(pOld

24、Brush);/在静态区域画图void CfiveDlg:DrawOnStaticArea()CWnd* pWnd = GetDlgItem(IDC_STATIC);/获得静态文本框的窗口对象CRect rect;pWnd->GetClientRect(&rect);CDC* pDC = pWnd->GetDC();/DrawOnMem();/ 一次性的将内存设备环境上绘制完毕的图形"贴"到屏幕上pDC->BitBlt(0, 0, rect.Width(), rect.Height(), &m_memDC, 0, 0, SRCCOPY);p

25、Wnd->ReleaseDC(pDC);/绘图按钮void CfiveDlg:OnBnClickedOk()/ TODO: 在此添加控件通知处理程序代码isDraw = true;/点击绘制按钮后，才绘制图形OnSelchangeList1();OnCbnSelchangeCombo1();OnCbnSelchangeCombo2();onRadioBtnGroup1Clicked();onRadioBtnGroup2Clicked();Invalidate(); /重绘窗口/*CDialogEx:OnOK();*/取消按钮void CfiveDlg:OnBnClickedCancel(

26、)/ TODO: 在此添加控件通知处理程序代码isDraw = false;CDialogEx:OnCancel();/radio画笔样式切换选择事件void CfiveDlg:onRadioBtnGroup1Clicked()/ TODO: 在此添加控件通知处理程序代码UpdateData(true);/更新界面值到变量中，必须有这句话，值才变化switch (m_penType)case 0:myPen.CreatePen(PS_SOLID, 3, outColor);break;case 1:myPen.CreatePen(PS_DASH, 3, outColor);break;case

27、 2:myPen.CreatePen(PS_DOT, 3, outColor);break;case 3:myPen.CreatePen(PS_DASHDOT, 3, outColor);break;default:break;/radio刷子样式切换选择事件void CfiveDlg:onRadioBtnGroup2Clicked()/ TODO: 在此添加控件通知处理程序代码UpdateData(true);/更新界面值到变量中，必须有这句话，值才变化switch (m_brushType)case 0:myBrush.CreateSolidBrush(inColor);break;cas

28、e 1:myBrush.CreateHatchBrush(HS_CROSS, inColor);break;case 2:myBrush.CreateHatchBrush(HS_FDIAGONAL, inColor);break;case 3:myBrush.CreateHatchBrush(HS_BDIAGONAL, inColor);break;/listBox切换选择事件void CfiveDlg:OnSelchangeList1()/ TODO: 在此添加控件通知处理程序代码CString strText;int nCurSel;nCurSel = m_ShapeList.GetCur

29、Sel(); / 获取当前选中列表项m_ShapeList.GetText(nCurSel, strText); / 获取选中列表项的字符串m_DrawType = strText; /赋给变量/combobox1画笔颜色切换选择事件void CfiveDlg:OnCbnSelchangeCombo1()/ TODO: 在此添加控件通知处理程序代码CString strText;int nCurSel;nCurSel = m_Combobox1.GetCurSel(); / 获取当前选中列表项m_Combobox1.GetLBText(nCurSel, strText); / 获取选中列表项的

30、字符串m_outColor = strText;if (m_outColor = "Red")outColor = RGB(255, 0, 0);else if (m_outColor = "Blue")outColor = RGB(0, 0, 255);else if (m_outColor = "Green")outColor = RGB(0, 255, 0);elseoutColor = RGB(0, 0, 0);/combobox2刷子颜色切换选择事件void CfiveDlg:OnCbnSelchangeCombo2()/

31、TODO: 在此添加控件通知处理程序代码CString strText;int nCurSel;nCurSel = m_Combobox2.GetCurSel(); / 获取当前选中列表项m_Combobox2.GetLBText(nCurSel, strText); / 获取选中列表项的字符串m_inColor = strText;if (m_inColor = "Red")inColor = RGB(255, 0, 0);else if (m_inColor = "Blue")inColor = RGB(0, 0, 255);else if (m_i

32、nColor = "Green")inColor = RGB(0, 255, 0);elseinColor = RGB(0, 0, 0);六、编写MFC单因子y=f(x) 测试数据处理程序, 要求有数据输入、保存、读入和绘图功能，使用菜单和加速键特性，坐标轴依据数据分布而确定。(20分)典型绘图效果如下：注意：所有编程题要求为 1) 代码要有注释，便于理解，规格要正确。 2) 要列出程序界面和运行效果。3) 列表显示所有编程资源，包括名称，标题，ID号，资源类别，关联变量类型，关联变量名称，消息响应函数名称。 4)程序界面和运行效果可打印，其它全部手写，打印者扣分。资源列表

33、：资源类名资源类别标题ID号关联变量消息响应函数变量类型变量名称CTestDataDrawView子菜单翻开txt数据ID_FILE_OPENCFileDialogdlgvoid CTestDataDrawView:OnFileOpen()CStringfilePathNameCStringfileNameCTestDataDrawView子菜单另存为txtID_FILE_SAVE_ASCFileDialogdlgvoid CTestDataDrawView:OnFileSaveAs()CStringfilePathNameCStringfileNameCTestDataDrawView子菜单

34、添加数据ID_MENUITEM32771AddTestDatadlgvoid CTestDataDrawView:OAddTestData()CTestDataDrawView子菜单去除数据ID_MENUITEM32772/void CTestDataDrawView:OnDataClear()CTestDataDrawView子菜单页面范围设置ID_MENUITEM32773ViewSetdlgvoid CTestDataDrawView:OnViewSet()CTestDataDrawView子菜单数据样式设置ID_MENUITEM32774StyleSetdlgvoid CTestDat

35、aDrawView:OnStyleSet()AddTestData对话框添加测试数据IDD_DIALOG1doubleInPutX对话框“添加按钮对应的消息响应函数：void AddTestData:OnAdd()doubleInPutYViewSet对话框页面范围设置IDD_DIALOG2doublev_xmin，v_xmax对话框“确定按钮对应的消息响应函数：void ViewSet:OnOK()doublev_ymin，v_ymaxStyleSet对话框数据颜色设置IDD_DIALOG3COLORREFSetColor对话框“点颜色按钮对应消息响应函数void StyleSet:OnDa

36、taColor()对话框“确定按钮对应的消息响应函数：void StyleSet:OnOK()COLORREFs_colorIntS_r.word程序运行效果：图：程序运行界面图：第一步 页面范围设置图：第二步 添加测试数据图：添加题目中的5个数据效果图图：设置点数据的半径和颜色图：将点数据保存为txt格式文件图：去除数据图：翻开保存的txt文件源代码：void CTestDataDrawView:OAddTestData() / TODO: Add your command handler code hereAddTestData dlg;if(IDOK = dlg.DoModal()if

37、(dlg.InPutX > pro->xMin && dlg.InPutX < pro->xMax && dlg.InPutY > pro->yMin && dlg.InPutY < pro->yMax)pro->xArray.push_back(dlg.InPutX);pro->yArray.push_back(dlg.InPutY);elseMessageBox("数值超出范围");return;Invalidate();void CTestDataDrawVie

38、w:OnViewSet() / TODO: Add your command handler code hereViewSet dlg;if(IDOK = dlg.DoModal()pro->xMin = dlg.v_xmin;pro->xMax = dlg.v_xmax;pro->yMin = dlg.v_ymin;pro->yMax = dlg.v_ymax;Invalidate();void CTestDataDrawView:OnStyleSet() / TODO: Add your command handler code hereDataStyleSet d

39、lgs;StyleSet dlg;if(IDOK = dlg.DoModal()pro->m_Color = dlg.s_color;pro->radius = dlg.s_r;Invalidate();void CTestDataDrawView:OnDataClear() / TODO: Add your command handler code herepro->xArray.clear();pro->yArray.clear();Invalidate();void CTestDataDrawView:OnFileOpen() / TODO: Add your c

40、ommand handler code hereCFileDialog dlg(TRUE);dlg.m_ofn.lpstrDefExt="txt"dlg.m_ofn.lpstrFilter="Drawing Files(*.txt)0*.txt0" if(dlg.DoModal()!=IDOK)return;CString filePathName=dlg.GetFileName();CString fileName = filePathName.GetBuffer(filePathName.GetLength();pro->ReadFromTex

41、tFile(fileName);Invalidate();void CTestDataDrawView:OnFileSaveAs() / TODO: Add your command handler code hereCFileDialog dlg(FALSE);dlg.m_ofn.lpstrDefExt="txt"dlg.m_ofn.lpstrFilter="Drawing Files(*.txt)0*.txt0" if(dlg.DoModal()!=IDOK)return;CString filePathName=dlg.GetFileName();

42、CString fileName = filePathName.GetBuffer(filePathName.GetLength();pro->WriteToTextFile(fileName);#pragma once#include<vector>using namespace std;class CMyTestDataDrawView;/点坐标为实际坐标class projectpublic:CString m_projectName;/4int projectNameLength;BOOL m_projectDisplay;/4std:vector<double

43、> yArray;std:vector<double> xArray;int activeLayerIndex;/当前激活图层序号4RECT rect; / 绘图区域大小double xMin, xMax, yMin, yMax; / 数据区域大小double xLower; / x下限double xUpper; / x上限double yLower; /y下限double yUpper; /y上限COLORREF m_Color;/color of an project CRect m_EnclosingRect; / int radius;public:project(

44、);project();void Draw(CDC *pDC);void SetRect(RECT rec); / 设置绘图区域int GetActiveLayerIndex()return activeLayerIndex;void WriteToTextFile(CString filename);void ReadFromTextFile(CString filename);#include "stdafx.h"#include "TestDataDraw.h"#include "project.h"#include "

45、;TestDataDrawView.h"#include <fstream>project:project()m_projectName = "myproject"m_projectDisplay = TRUE;activeLayerIndex = 0;xMax = 100;xMin = 0;yMax = 100;yMin = 0;m_Color = RGB(255,0,0);/color of an project radius = 5;project:project()int num = xArray.size();if (num>0)dou

46、ble x = NULL;double y = NULL;for (int i=num-1; i>-1; i-)x = xArray.at(i);y = yArray.at(i);xArray.clear();yArray.clear();void project:SetRect(RECT rec)rect = rec;void project:Draw(CDC *pDC)CPen *newPen = new CPen(0, 1, RGB(0, 0, 0);CPen *oldPen = pDC->SelectObject(newPen);LOGFONT font;font.lfHe

47、ight = -20;font.lfEscapement = 0;font.lfItalic = 1;font.lfWeight = FW_BOLD; /加粗font.lfUnderline = 0; / 不加下划线font.lfStrikeOut = 0; / 无删除线font.lfCharSet = 0; / 选择字符集pDC->SelectObject(CreateFontIndirect(&font);pDC->SetBkMode(0);int x, y;/- 绘制坐标轴 -/font.lfHeight = -16;font.lfCharSet = 134;pDC-

48、>SelectObject(CreateFontIndirect(&font);/* y轴pDC->MoveTo(rect.left + (rect.right - rect.left)/2, rect.bottom - 50);pDC->LineTo(rect.left + (rect.right - rect.left)/2, rect.top + 50);pDC->TextOut(rect.left + (rect.right - rect.left)/2, rect.top + 30, "Y");/ 箭头pDC->MoveTo(

49、rect.left + (rect.right - rect.left)/2, rect.top + 50);pDC->LineTo(rect.left + (rect.right - rect.left)/2 + 5 , rect.top + 60);pDC->MoveTo(rect.left + (rect.right - rect.left)/2, rect.top + 50);pDC->LineTo(rect.left + (rect.right - rect.left)/2 -5, rect.top + 60);/* x轴pDC->MoveTo( rect.l

50、eft + 60, rect.bottom - (rect.bottom - rect.top)/2);pDC->LineTo(rect.right - 60, rect.bottom - (rect.bottom - rect.top)/2);pDC->TextOut(rect.right - 50, rect.bottom - (rect.bottom - rect.top)/2 , "X");/ 箭头pDC->MoveTo(rect.right - 60, rect.bottom - (rect.bottom - rect.top)/2);pDC-&

51、gt;LineTo(rect.right - 70, rect.bottom - (rect.bottom - rect.top)/2 + 5);pDC->MoveTo(rect.right - 60, rect.bottom - (rect.bottom - rect.top)/2);pDC->LineTo(rect.right - 70, rect.bottom - (rect.bottom - rect.top)/2 - 5);/ 标尺int i = 0;/x轴标尺for (x = rect.left + 60;x<rect.right - 60;x = x+20 )i

52、nt h = i%2 3 : 6;y=rect.bottom - (rect.bottom - rect.top)/2;pDC->MoveTo(x,y);y=rect.bottom - (rect.bottom - rect.top)/2 - h;pDC->LineTo(x,y);i+;int j = 0;/Y轴标尺for (y = rect.bottom - 50;y>rect.top + 50;y = y-20)int h = j%2 3 : 6;x=rect.left + (rect.right - rect.left)/2;pDC->MoveTo(x,y);x=rect.left + (rect.right - rect.left)/2 + h;pDC->LineTo(x,y);j+;pDC->SelectObject(oldPen);delete newP