上海网站建设平台站霸网络,网站备案密码重置,如何优化网络,网站什么语言好Qt柱状图#xff0c;需要使用到QChart模块#xff0c;因此需要在安装Qt时勾选上QChart模块。然后在工程.pro文件中加上 QT charts
参考代码#xff1a;
//MainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include QMainWindow
#include QPushButton…Qt柱状图需要使用到QChart模块因此需要在安装Qt时勾选上QChart模块。然后在工程.pro文件中加上 QT charts
参考代码
//MainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include QMainWindow
#include QPushButton
#include QLineEditQT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent nullptr);~MainWindow();public slots:void slotBtnClicked();private:Ui::MainWindow *ui;QLineEdit *edit;QPushButton *btn;
};#endif // MAINWINDOW_H
//MainWindow.cpp
#include mainwindow.h
#include ui_mainwindow.h#include QtCharts/QChartView
#include QtCharts/QBarSeries
#include QtCharts/QBarSet
#include QtCharts/QLegend
#include QtCharts/QBarCategoryAxisQT_CHARTS_USE_NAMESPACEMainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui-setupUi(this);edit new QLineEdit(this);edit-move(50,50);edit-resize(300,30);btn new QPushButton(this);btn-setText(QString::fromLocal8Bit(排序));btn-move(400,50);btn-resize(100,30);connect(btn, SIGNAL(clicked()), this, SLOT(slotBtnClicked()));this-resize(600,100);}void MainWindow::slotBtnClicked()
{QString str edit-text();QStringList list str.split( );list.erase(std::remove_if(list.begin(), list.end(), [](const QString tmp){return tmp.isEmpty();}), list.end());for(int i0; ilist.count(); i){for(int ji1; jlist.count(); j){if(list[i].toInt() list[j].toInt()){QString tmp list[i];list[i] list[j];list[j] tmp;}}}QBarSeries *series new QBarSeries();for(auto it:list){QBarSet *set new QBarSet(it);*set it.toInt();series-append(set);}QChart *chart new QChart(); // 实例化QChartchart-addSeries(series); //往Chart里添加serieschart-setTitle(QString::fromLocal8Bit(排序后数据)); //设置表格头chart-setAnimationOptions(QChart::SeriesAnimations);QStringList categories; //创建字符串Listcategories data;QBarCategoryAxis *axis new QBarCategoryAxis(); //实例化坐标轴文字标识轴axis-append(categories); //将字符串列表append到文字标识轴里chart-createDefaultAxes();//创建默认的坐标轴笛卡尔坐标一定要有这一句chart-setAxisX(axis, series);//设置坐标轴chart-legend()-setVisible(true); //设置图例为显示状态chart-legend()-setAlignment(Qt::AlignBottom);//设置图例的显示位置在底部//显示容器 QChartViewQChartView *chartView new QChartView(chart, this); //添加Chart到QChartView上chartView-setRenderHint(QPainter::Antialiasing);chartView-move(50,100);chartView-resize(600,400);chartView-setVisible(true);this-resize(900,600);
}MainWindow::~MainWindow()
{delete ui;
}
效果图
