在gridlayout 中批量添加了checkbox ，如何在刷新頁(yè)面的時(shí)候刪除這些checkbox。附上代碼def __init__():    self.model_gridlayout = QtWidgets.QGridLayout(self.gridLayoutWidget)    self.model_gridlayout.setContentsMargins(0, 0, 0, 0)    self.model_gridlayout.setObjectName("model_gridlayout")def create_box():        for i in data:             if i[0]:                     checkbox = self.create_checkbox(i[0],i[1])                    self.model_gridlayout.addWidget(checkbox, x, index, 1, 1)                    self.model_widgets.append(checkbox)