QHBoxLayout清空子控件
layout = QHBoxLayout()
widget1 = QLabel("Widget 1")
widget2 = QLabel("Widget 2")
widget3 = QLabel("Widget 3")
layout.addWidget(widget1)
layout.addWidget(widget2)
layout.addWidget(widget3)
# remove widget2 from the layout
layout.removeWidget(widget2)
widget2.deleteLater()
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标签：控件,Widget,QHBoxLayout,layout,addWidget,widget2,空子 From： https://www.cnblogs.com/herd/p/17252682.html