本文阐述了拖放操作中目标应用程序的责任，包括确定拖放效果、整合有效数据、提供视觉反馈、实现滚动以及注册和撤销目标窗口。
A drop-target application is responsible for:
- Determining the effect of the drop on the target application.
- Incorporating any valid dropped data when the drop occurs.
- Communicating target feedback to the source so the source application can provide appropriate visual feedback such as setting the cursor.
- Implementing drag scrolling.
- Registering and revoking its application windows as drop targets.
(post by shinyr.com)
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