How do I detect if a floating control is closed?

我怎么检测如果浮动控制关闭？

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The first option is the simplest but it's not desirable to have many copies of the library floating around across the projects -- even under version control.

第一个选项是最简单的，但是不希望在项目周围出现许多库的副本——即使在版本控制下。

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The survey's results, along with other studies, may account for a push to pass the Tanning Bed Cancer Control Act, which has been floating in U.S. congressional committees since 2010.

该调查的研究结果以及其他研究可能会推进通过 《日光浴床癌症防治法案》，该法案自2010年便在美国国会中讨论了。

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With inflation under much better control, floating exchange rates (China is a big exception) and well-stocked foreign-exchange reserves now dominate in the emerging world, providing protection against falling exports and flighty foreign investors.

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There were a number of different groups floating around in Iraq that were not under our control, and we didn't want them clashing in a way that could interfere with our operations.

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We all have various identities floating around out there, with their own avatars, icons and passwords, only partially under our own control.

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