Listener Class missing C# WPF application

harrybedford12 2018-03-28 12:03:25 UTC #1

I am new to leap motion and have followed the setup guide for leap motion using C# and a WPF project found here:
https://developer.leapmotion.com/documentation/csharp/devguide/Project_Setup.html.

I have then tried to implement the hello world guide (https://developer.leapmotion.com/documentation/v2/csharp/devguide/Sample_Tutorial.html), whilst adjusting it for a WPF application. However, when adding the SampleListener class "Listener" is underlined in red with the following error:

The type or namespace name 'Listener' could not be found (are you missing a using directive or an assembly reference?)

Also, due to this none of the listener are working, and I am unable to use the method controller.AddListener(listener).

Please can you help and tell me what I am missing. I am using the 3.2.1 leap motion developer kit with Visual Studio 2017.

AlexColgan 2018-03-28 14:50:35 UTC #2

What version of .NET?

harrybedford12 2018-03-28 15:09:39 UTC #3

4.6.1. I have also tried changing the target framework to 4.5 so that it directly matches the LeapCSharp.NET4.5 reference name, but still had no luck.

aliyoussef 2018-05-23 13:44:23 UTC #4

Hey Harry,
I'm running into the exact same problem here ! Did you find a solution to that ?
Thanks.

harrybedford12 2018-05-25 10:14:14 UTC #5

Hey Ali,
No sadly I could not fix this issue, although I did manage to get the leap motion working in a WinForms application.

Claod 2021-03-23 08:31:22 UTC #6

Try import the reference on your class with a "using Leap;" on top of the class.
Then make sure everything is in public (no private class, private method, etc)
Check constructors

? any update ?

I also have a problem about the controller.removeListener method for the SDK3.2.1. This method was still here in the v2, no doc to remove a listener then for the v3 ...
No C# dll for the SDK4 and 5. No doc to compile them.