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如何在 mx:menuBar 组件中禁用子菜单上的阴影?
您将需要编辑mx.skins.halo.MenuBarBackgroundSkin,或创建自己的皮肤并将backgroundSkin="mySkinClass"属性添加到 menuBar。
mx.skins.halo.MenuBarBackgroundSkin
backgroundSkin="mySkinClass"