unitreemenu自动显示滚动条

unitreemenu自动显示滚动条

UniTreeView1.ClientEvents.ExtEvents.Values['beforeadd'] :=
    'function(sender, component, index, eOpts){' +
    'var tree=Ext.get(component.getId());' +
    'Ext.core.DomHelper.applyStyles(tree,"overflow-y:auto");' + '}';