自定义封装Qt柱状图类，实现数据动态更新和鼠标数值显示

[{"title":"（ 10 个子文件 9KB ） 自定义封装Qt柱状图类，实现数据动态更新和鼠标数值显示","children":[{"title":"main.cpp <span style='color:#111;'> 183B </span>","children":null,"spread":false},{"title":"mainwindow.h <span style='color:#111;'> 850B </span>","children":null,"spread":false},{"title":"ChartBuild.pro.user <span style='color:#111;'> 23.30KB </span>","children":null,"spread":false},{"title":"barchartsbuilder.h <span style='color:#111;'> 1.12KB </span>","children":null,"spread":false},{"title":"barchartsbuilder.cpp <span style='color:#111;'> 3.01KB </span>","children":null,"spread":false},{"title":"mainwindow.cpp <span style='color:#111;'> 3.27KB </span>","children":null,"spread":false},{"title":"mainwindow.cpp.YnVXbc <span style='color:#111;'> 705B </span>","children":null,"spread":false},{"title":"mainwindow.ui <span style='color:#111;'> 2.67KB </span>","children":null,"spread":false},{"title":"mainwindow.h.autosave <span style='color:#111;'> 846B </span>","children":null,"spread":false},{"title":"ChartBuild.pro <span style='color:#111;'> 1.10KB </span>","children":null,"spread":false}],"spread":true}]