Leap doesn't seem to update when wpf window isn't active

Question

I am trying to use output from the leap in WPF. However whenever I unfocus the window (for instance by pressing alt+tab), the leap stops giving output. So my question is, how to make sure the leap will output even when focused on a second application?

score 2 · Accepted Answer · answered Feb 26 '15 at 06:50

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You just need to set the Leap Motion API background frames policy.

controller.SetPolicy(Controller.PolicyFlag.POLICY_BACKGROUND_FRAMES);

answered Feb 26 '15 at 06:50

Charles Ward

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score -1 · Answer 2 · edited May 23 '17 at 11:52

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WPF won't listen to any events outside its window. You have to explicitly set it up by yourself to listen to "globally" events.

An example of a global event is listening to keyboard even outside WPF's window

edited May 23 '17 at 11:52

Community

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answered Feb 25 '15 at 20:58

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The problem is not related to WPF itself, but Leap Motion settings instead. – nphx Mar 03 '15 at 10:11

Leap doesn't seem to update when wpf window isn't active

2 Answers2

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