MFC扩展编程实例叠加与折线面积图表创显示
当前例程实现三个类型的面积 图表创建显示。
分别是普通面积图表,叠加面积图表,包含百分比叠加面积图表,还有折线面积图表。
例程界面如下。
MFC扩展编程实例叠加与折线面积图表创显示
界面界面有两个按钮,可发分别设置面积图表的类型,曲线的显示类型。
类型可以设置为叠加,带百分比叠加,普通两种,曲线类型可以设置为直线,曲线,折线三种。
折线类型设置就可以实现折线面积图表的创建。
下面是例程实现过程。
先创建单文档工程,class CMy123View : public CBCGPFormView。
内样也是在默认的对话框资源上添加一图片控件,修改ID为IDC_CHART,用于显示图表。
然后在视窗类中添加图表变量,CBCGPChartCtrl m_wndChart;
及虚函数Create,用于创建图表。
- inline double Rand (double dblStart, double dblFinish)
- {
- double minVal = min(dblStart, dblFinish);
- double maxVal = max(dblStart, dblFinish);
- return (maxVal - minVal) * (double)rand() / (RAND_MAX + 1) + minVal;
- }
- BOOL CMy123View::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext)
- {
- BOOL bRst = CBCGPFormView::Create(lpszClassName, lpszWindowName, dwStyle, rect, pParentWnd, nID, pContext);;
- //图表初始化;
- m_wndChart.SubclassDlgItem(IDC_CHART,this);
- CBCGPInfoTipOptions infoTipOptions;
- infoTipOptions.m_StemLocation = CBCGPPopupWindow::BCGPPopupWindowStemLocation_Left;
- m_wndChart.EnableInfoTip(TRUE, &infoTipOptions);//显示提示文本;
- CBCGPChartVisualObject* pChart = m_wndChart.GetChart();//获取图表指针;
- BCGPChartCategory style = BCGPChartArea;
- BCGPChartType type = BCGP_CT_SIMPLE;
- pChart->SetChartType(style, type);//设置图表类型;
- pChart->SetChartTitle(_T("面积图表"));//设置图表标题;
- pChart->SetSeriesShadow(true);//数据系列显示阴影;
- pChart->SetCurveType(BCGPChartFormatSeries::CCT_LINE);//图表系列线条样式;
- pChart->ShowDataMarkers(true, 5, BCGPChartMarkerOptions::MS_CIRCLE);//设置数据标志点属性;
- pChart->ShowDataLabels(TRUE, TRUE, TRUE, 45);//设置数据标签属性;
- pChart->SetThemeOpacity(70);//设置透明度;
- //创建数据系列,添加数据;
- CBCGPChartSeries* pSeries1 = pChart->CreateSeries(_T("第一年"));
- CBCGPChartSeries* pSeries2 = pChart->CreateSeries(_T("第二年"));
- CBCGPChartSeries* pSeries3 = pChart->CreateSeries(_T("第三年"));
- //
- COleDateTime date;
- CString sMonth;
- COleDateTime today = COleDateTime::GetCurrentTime();
- double arTemp[] = { 5., 12., 19, 22, 19, 24, 22, 24, 18, 14, 10, 7 };
- for (int nMonth = 1; nMonth <= 12; nMonth++)
- {
- date.SetDateTime(today.GetYear(), nMonth, 1, 0, 0, 0);
- sMonth = date.Format(_T("%b"));
- pSeries1->AddDataPoint(sMonth, arTemp[nMonth - 1]);
- pSeries2->AddDataPoint((int)(arTemp[nMonth - 1] + Rand(-5, 5)));
- pSeries3->AddDataPoint((int)(arTemp[nMonth - 1] + Rand(-5, 5)));
- }
- //添加添加到布局管理器统一管理布局;
- if (GetLayout() == NULL)
- return bRst;
- CBCGPStaticLayout* pLayout = (CBCGPStaticLayout*)GetLayout();
- if (pLayout == NULL)
- return bRst;
- pLayout->AddAnchor(m_wndChart.GetDlgCtrlID(), CBCGPStaticLayout::e_MoveTypeNone, CBCGPStaticLayout::e_SizeTypeBoth);
- //
- return bRst;
- }
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最后添加设置图表类型与图表曲线类型的两按钮控件,来设置属性。
- void CMy123View::OnBnClickedButton1()
- {
- static int nChartType=2;
- CBCGPChartVisualObject* pChart = m_wndChart.GetChart();//获取图表指针;
- pChart->ShowSeries(true,1);
- pChart->ShowSeries(true,2);
- pChart->SetCurveType(BCGPChartFormatSeries::CCT_LINE);
- BCGPChartCategory style = BCGPChartArea;
- // BCGP_CT_DEFAULT, BCGP_CT_SIMPLE,//面积图表;
- // BCGP_CT_STACKED, BCGP_CT_100STACKED,//叠加,百分比叠加面积图表;
- BCGPChartType type =(BCGPChartType)nChartType;
- pChart->SetChartType(style, type);//设置图表类型;
- pChart->Redraw();
- //
- nChartType++;
- nChartType = nChartType>3?1:nChartType;
- }
- void CMy123View::OnBnClickedButton2()
- {
- static int nCurveChoose=0;
- CBCGPChartVisualObject* pChart = m_wndChart.GetChart();//获取图表指针;
- if(nCurveChoose==1)
- {
- pChart->ShowSeries(false,1);
- pChart->ShowSeries(false,2);
- }
- else
- {
- pChart->ShowSeries(true,1);
- pChart->ShowSeries(true,2);
- }
- BCGPChartFormatSeries::ChartCurveType curve;
- if(nCurveChoose==0)
- curve = BCGPChartFormatSeries::CCT_SPLINE;
- else if(nCurveChoose==1)
- curve = BCGPChartFormatSeries::CCT_STEP;
- else
- curve = BCGPChartFormatSeries::CCT_LINE;
- pChart->SetCurveType(curve);
- pChart->Redraw();
- nCurveChoose++;
- nCurveChoose = nCurveChoose>2?0:nCurveChoose;
- }
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例程是基于MFC扩展库实现,可以网站内搜索下载。
例程源代码下载地址:
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