MFC学生信息管理系统的数据分析部分.zip

 // DrawDataView.cpp: CDrawDataView 类的实现 // #include "pch.h" #include "framework.h" // SHARED_HANDLERS 可以在实现预览、缩略图和搜索筛选器句柄的 // ATL 项目中进行定义，并允许与该项目共享文档代码。 #ifndef SHARED_HANDLERS #include "DrawData.h" #endif #include "DrawDataDoc.h" #include "DrawDataView.h" #include "Student.h" #include "afxdialogex.h" #ifdef _DEBUG #define new DEBUG_NEW #endif // CDrawDataView IMPLEMENT_DYNCREATE(CDrawDataView, CView) BEGIN_MESSAGE_MAP(CDrawDataView, CView) // 标准打印命令 ON_COMMAND(ID_FILE_PRINT, &CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, &CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, &CView::OnFilePrintPreview) ON_COMMAND(IDC_Math, &CDrawDataView::OnMath) ON_COMMAND(IDC_MATH_LINE, &CDrawDataView::OnMathLine) ON_COMMAND(IDC_PROGRAM_LINE, &CDrawDataView::OnProgramLine) ON_COMMAND(IDC_PROGRAM, &CDrawDataView::OnProgram) ON_COMMAND(IDC_SUM_LINE, &CDrawDataView::OnSumLine) ON_COMMAND(IDC_SUM, &CDrawDataView::OnSum) END_MESSAGE_MAP() // CDrawDataView 构造/析构 CDrawDataView::CDrawDataView() noexcept { // TODO: 在此处添加构造代码 } CDrawDataView::~CDrawDataView() { } BOOL CDrawDataView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: 在此处通过修改 // CREATESTRUCT cs 来修改窗口类或样式 return CView::PreCreateWindow(cs); } // CDrawDataView 绘图 void CDrawDataView::OnDraw(CDC* pDC) { CDrawDataDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); if (!pDoc) return; // TODO: 在此处为本机数据添加绘制代码 } // CDrawDataView 打印 BOOL CDrawDataView::OnPreparePrinting(CPrintInfo* pInfo) { // 默认准备 return DoPreparePrinting(pInfo); } void CDrawDataView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: 添加额外的打印前进行的初始化过程 } void CDrawDataView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: 添加打印后进行的清理过程 } // CDrawDataView 诊断 #ifdef _DEBUG void CDrawDataView::AssertValid() const { CView::AssertValid(); } void CDrawDataView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CDrawDataDoc* CDrawDataView::GetDocument() const // 非调试版本是内联的 { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CDrawDataDoc))); return (CDrawDataDoc*)m_pDocument; } #endif //_DEBUG // CDrawDataView 消息处理程序 void CDrawDataView::DrawScore(CDC* pDC, int* fScore, int nNum) //画直方图函数 { // fScore是成绩数组指针，nNum是学生人数 int nScoreNum[] = { 0, 0, 0, 0, 0 }; // 各成绩段的人数的初 始值 // 下面是用来统计各分数段的人数 for (int i = 0; i < nNum; i++) { int nSeg = (int)(fScore[i]) / 10; // 取数的"十"位上的值 if (nSeg < 6) nSeg = 5; // <60分 if (nSeg >= 10) nSeg = 9;// 当为100分，算为>90分数段 nScoreNum[nSeg - 5] ++; // 各分数段计数 } int nSegNum = sizeof(nScoreNum) / sizeof(int); // 计算有多少个分数段 // 求分数段上最大的人数 int nNumMax = nScoreNum[0]; for (int i = 1; i < nSegNum; i++) { if (nNumMax < nScoreNum[i]) nNumMax = nScoreNum[i]; } CRect rc; GetClientRect(rc); rc.DeflateRect(180, 40); // 缩小矩形大小 int nSegWidth = rc.Width() / nSegNum; // 计算每段的宽度 int nSegHeight = rc.Height() / nNumMax; // 计算每段的单位高度 COLORREF crSeg = RGB(0, 0, 192); // 定义一个颜色变量 COLORREF crSeg1 = RGB(255, 0, 0); // 定义一个颜色变量 CBrush brush1(HS_FDIAGONAL, crSeg); CBrush brush2(HS_BDIAGONAL, crSeg1); CPen pen(PS_INSIDEFRAME, 2, crSeg); CBrush* oldBrush = pDC->SelectObject(&brush1); // 将brush1选入设备环境 CPen* oldPen = pDC->SelectObject(&pen); // 将pen选 入设备环境 CRect rcSeg(rc); rcSeg.right = rcSeg.left + nSegWidth; // 使每段的矩形宽度等于nSegWidth CString strSeg[] = { (CString)"<60", (CString)"60-70", (CString)"70-80", (CString)"80-90", (CString)">=90" }; CRect rcStr; for (int i = 0; i < nSegNum; i++) { // 保证相邻的矩形填充样式不相同 if (i % 2) pDC->SelectObject(&brush2); else pDC->SelectObject(&brush1); rcSeg.top = rcSeg.bottom - nScoreNum[i] * nSegHeight - 2; // 计算每段矩形的高度 pDC->Rectangle(rcSeg); if (nScoreNum[i] > 0) { CString str; str.Format((CString)"%d人", nScoreNum[i]); pDC->DrawText(str, rcSeg, DT_CENTER | DT_VCENTER | DT_SINGLELINE); } rcStr = rcSeg; rcStr.top = rcStr.bottom + 2; rcStr.bottom += 20; pDC->DrawText(strSeg[i], rcStr, DT_CENTER | DT_VCENTER | DT_SINGLELINE); rcSeg.OffsetRect(nSegWidth, 0); // 右移矩形 } pDC->SelectObject(oldBrush); // 恢复原来的画刷属性 pDC->SelectObject(oldPen); // 恢复原来的画笔属性 } void CDrawDataView::Drawlist(CDC* pDC, int* fScore, int nNum)//画折线图 { // fScore是成绩数组指针，nNum是学生人数 int nScoreNum[] = { 0, 0, 0, 0, 0 }; // 各成绩段的人数的初 始值 // 下面是用来统计各分数段的人数 for (int i = 0; i < nNum; i++) { int nSeg = (int)(fScore[i]) / 10; // 取数的"十"位上的值 if (nSeg < 6) nSeg = 5; // <60分 if (nSeg >= 10) nSeg = 9;// 当为100分，算为>90分数段 nScoreNum[nSeg - 5] ++; // 各分数段计数 } CString str; CString strSeg[] = { (CString)"<60", (CString)"60-70", (CString)"70-80", (CString)"80-90", (CString)">=90" }; //绘制X/Y轴 CPen pen; pen.CreatePen(PS_SOLID, 5, RGB(0, 0, 0)); CPen* oldpen = pDC->SelectObject(&pen); //Y轴 pDC->MoveTo(70, 30);//画线的开始位置 pDC->LineTo(70, 450); pDC->TextOut(2, 40, _T("人数/人")); //绘制箭头 pDC->MoveTo(60, 40); pDC->LineTo(70, 30); pDC->LineTo(80, 40); //X轴 pDC->MoveTo(70, 450);//画线的开始位置 pDC->LineTo(700, 450); pDC->TextOut(700, 455, _T("成绩/分")); //绘制箭头 pDC->MoveTo(690,440); pDC->LineTo(700,450); pDC->LineTo(690,460); //绘制折线 CPen pen1; pen1.CreatePen(PS_SOLID, 3, RGB(255, 0, 0)); CPen* newpen = pDC->SelectObject(&pen1); CDC* pControlDC = pDC; pControlDC->MoveTo(70, 450); for (int i = 0; i < 5; i++) { pControlDC->LineTo(i * 120+120, 450 - (450 * nScoreNum[i] / nNum));//换两点之间的线 str.Format("%d人", nScoreNum[i]); pControlDC->TextOut(i * 120 + 120, 450 - (450 * nScoreNum[i] / nNum) - 30, str);//在线的上方输出文字 pControlDC->TextOut(i * 120 + 120, 460, strSeg[i]); } } void CDrawDataView::OnMath() { // TODO: 在此添加命令处理程序代码 CFile file; if (!file.Open("C:\\Users\\17810\\source\\repos\\课程设计—学生信息管理系统\\Student Information Management System\\studentfile.dat", CFile::modeReadWrite | CFile::shareDenyNone)) { MessageBox(_T("文件不存在！"), _T("警告"), MB_OK | MB_ICONWARNING); return; } Student u; int i = 0; while (file.Read(&u, sizeof(u)) == sizeof(u)) { m_Num[i] = _ttoi((CString)u.math); i++; } InvalidateRect(NULL); UpdateWindow(); DrawScore(GetDC(), m_Num, i); file.Close(); } void CDrawDataView::OnMathLine() { // TODO: 在此添加命令处理程序代码 CFile file; if (!file.Open("C:\\Users\\17810\\source\\repos\\课程设计—学生信息管理系统\\Student Information Management System\\studentfile.dat", CFile::modeReadWrite | CFile::shareDenyNone)) { MessageBox(_T("文件不存在！"), _T("警告"), MB_OK | MB_ICONWARNING); return; } Student u; int i = 0; while (file.Read(&u, sizeof(u)) == sizeof(u)) { m_Num[i] = _ttoi((CString)u.math); i++; } InvalidateRect(NULL); UpdateWindow(); Drawlist(GetDC(), m_Num, i); file.Close(); } void CDrawDataView::OnProgramLine() { // TODO: 在此添加命令处理程序代码 CFile file; if (!file.Open("C:\\Users\\17810\\source\\repos\\课程设计—学生信息管理系统\\Student Information Management System\\studentfile.dat", CFile::modeReadWrite | CFile::shareDenyNone