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qchart 图表_QChart柱状图、折线图和散点图图像及X轴刷新

使用QChart须要在*.pro中添加app

QT+=charts 在*.h文件中添加使用Qt中预先定义好的宏:

[cpp] view plain copyide

QT_CHARTS_BEGIN_NAMESPACE

classQChartView;

classQChart;

QT_CHARTS_END_NAMESPACE

QT_CHARTS_USE_NAMESPACE 或者使用

usingnamespaceQtCharts

柱状图:

mainwindow.h

#include

#include

#include

#include

//#include

//#include

//#include

//#include

#include

#include

//#include

//#include

#include

#include

#include

#include

#include

QT_CHARTS_BEGIN_NAMESPACE

classQChartView;

classQChart;

QT_CHARTS_END_NAMESPACE

QT_CHARTS_USE_NAMESPACE

namespaceUi{

classMainWindow;

}

classMainWindow:publicQMainWindow

{

Q_OBJECT

public:

explicitMainWindow(QWidget*parent=0);

~MainWindow();

private:

voidinitChart();

privateslots:

voidsltpushButton();

voidsltpushButton_2();

voidsltpushButton_3();

voidsltCategoriesChanged();

private:

Ui::MainWindow*ui;

QChart*m_typeChart;

QChartView*m_typeView;

QBarCategoryAxis*m_typeAxis;

QValueAxis*m_typeAxisY;

QBarSeries*m_barSeries;

QBarSet*m_barSet;

};

mainwindow.cpp动画

#include"mainwindow.h"

#include"ui_mainwindow.h"

MainWindow::MainWindow(QWidget*parent):

QMainWindow(parent),

ui(newUi::MainWindow)

{

ui->setupUi(this);

initChart();

}

MainWindow::~MainWindow()

{

deleteui;

}

voidMainWindow::initChart()

{

m_typeChart=newQChart();

m_typeChart->setAnimationOptions(QChart::SeriesAnimations);//动画效果

m_barSet=newQBarSet("eg")

;