请问整个软件，失去焦点，转到其他软件去了以后，怎让获取这个事件，或者属性 是整个软件。
我需要在获取到这个软件失去焦点后，我隐藏一个悬浮框。
Hi 彭123,
请尝试使用application.deactivated事件，该事件仅在用户切换到其他应用程序时激发。
Application.Deactivated Event
： 当应用程序停止作为前台应用程序时发生。
Best regards
Yong Lu
MSDN Community Support
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