Cannot use Matrix Struct in C# WPF/ LeapDeveloperKit 3.2.1+45911

[BogdanB]

Hello, I want to recreate circle gesture and I wanted to use Matrix Struct in order to do this.

It is not recognized in the suggestions and also it's not working to Instantiate a new obj.

I am using Visual Studio 2017 / Reference : LeapCSharp.NET4.5

Thank You.

[HaHayou]

参考：LeapCSharp.NET4.5

请问一下LeapCSharp.NET4.5这个是在哪个版本里面的