QT 根据点击状态可变色圆形按钮

[{"title":"（ 9 个子文件 6KB ） QT 根据点击状态可变色圆形按钮","children":[{"title":"Radius_Button","children":[{"title":"dialog.cpp <span style='color:#111;'> 201B </span>","children":null,"spread":false},{"title":"Radius_Button.pro <span style='color:#111;'> 1.08KB </span>","children":null,"spread":false},{"title":"dialog.h <span style='color:#111;'> 273B </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 183B </span>","children":null,"spread":false},{"title":"mainwindow.ui <span style='color:#111;'> 654B </span>","children":null,"spread":false},{"title":"mainwindow.cpp <span style='color:#111;'> 1.94KB </span>","children":null,"spread":false},{"title":"dialog.ui <span style='color:#111;'> 683B </span>","children":null,"spread":false},{"title":"mainwindow.h <span style='color:#111;'> 880B </span>","children":null,"spread":false},{"title":"Radius_Button.pro.user <span style='color:#111;'> 101.22KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]