If the target represents a function rather than a container (such as a print icon), the icon must visually hint that it received the drop and is now printing. It can do this with animation or by otherwise changing its visual state.

• 如果目标对象代表功能，而不是容器（如打印图标），图标必须视觉上暗示它接受了拖放并且正在打印这可以使用动画或视觉状态改变来实现。