您需要运行主题服务。这是你怎么做的

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I am using HTML5 drag and drip. During drag & drop (DnD) on Windows 7, I do not see a ghost image when I am dragging an item. It affects all browsers. How do I get it to show?

You need theme services running. Here is how you do that.

Start -> All Progam -> Administrative Tools -> Component Services -> Services (Local) -> Theme (Local)