一、環境準備
1、安裝Qt的時候需要勾上chart
2、.pro
QT = charts
3、添加頭文件
#include <QtChar
二、在ui裡拖一個widget過去
![](https://news.xinpengboligang.com/upload/keji/0040bcf98eb775c743a9c7702cdbeb3b.jpeg)
三、代碼
1、mainwindow.h聲明一個餅圖
QPieSeries *series;//餅圖相關
2、mainwindow.cpp實現
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ui->widget->setStyleSheet("QWidget{background-color:#222648;}");
series = new QPieSeries();
series->append("20%", 2);
series->append("80%", 8);
series->setLabelsVisible();
QPieSlice *slice_red = series->slices().at(0);
QPieSlice *slice_green = series->slices().at(1);
slice_red->setColor(QColor(199,38,22));
slice_green->setColor(QColor(0,165,94));
slice_red->setLabelColor(QColor(255,255,255));
slice_green->setLabelColor(QColor(255,255,255));
//slice_red->setExploded();//展開
QFont font;
font.setPointSize(12);
slice_red->setLabelFont(font);
slice_green->setLabelFont(font);
QChart *chart = new QChart();
chart->addSeries(series);
chart->legend()->hide();
chart->setBackgroundBrush(QBrush(QColor(34,38,72)));
chart->setAnimationOptions(QChart::AllAnimations);//設置啟用或禁用動畫
QChartView *chartview = new QChartView(chart);
chartview->setRenderHint(QPainter::Antialiasing);
chartview->setParent(ui->widget);
chartview->resize(ui->widget->size());
![](https://news.xinpengboligang.com/upload/keji/9cb93a5c9b8445834f27d699d1e6ac18.jpeg)