Qt进行chart控件绘图

代码如下：
main.cpp

#include <QtWidgets/QApplication>
  #include <QtWidgets/QMainWindow>
  #include <QtCharts/QChartView>
  #include <QtCharts/QPieSeries>
  #include <QtCharts/QPieSlice>

  QT_CHARTS_USE_NAMESPACE

  int main