Qt BarChart實踐

按照幫助文檔編寫

運行截圖

上代碼

#include "widget.h" #include "ui_widget.h" Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); QBarSet *set0 = new QBarSet("Jane"); QBarSet *set1 = new QBarSet("John"); QBarSet *set2 = new QBarSet("Axel"); QBarSet *set3 = new QBarSet("Mary"); QBarSet *set4 = new QBarSet("Samantha"); *set0 << 1 << 2 << 3 << 4 << 5 << 6; *set1 << 5 << 0 << 0 << 4 << 0 << 7; *set2 << 3 << 5 << 8 << 13 << 8 << 5; *set3 << 5 << 6 << 7 << 3 << 4 << 5; *set4 << 9 << 7 << 5 << 3 << 1 << 2; QBarSeries *series = new QBarSeries(); series->append(set0); series->append(set1); series->append(set2); series->append(set3); series->append(set4); QChart *chart = new QChart(); chart->addSeries(series); chart->setTitle("Simple barchart example"); chart->setAnimationOptions(QChart::SeriesAnimations); QStringList categories; categories << "Jan" << "Feb" << "Mar" << "Apr" << "May" << "Jun"; QBarCategoryAxis *axis = new QBarCategoryAxis(); axis->append(categories); chart->createDefaultAxes(); chart->setAxisX(axis, series); chart->legend()->setVisible(true); chart->legend()->setAlignment(Qt::AlignBottom); QChartView *chartView = new QChartView(this); chartView->setChart(chart); chartView->setRenderHint(QPainter::Antialiasing); chartView->resize(400,300); chartView->show(); } Widget::~Widget() { delete ui; }

Qt

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