fixed a runtime error when using the IL2CPP scripting backend

hecomi / uDesktopDuplication

Desktop Duplication API implementation for Unity (only for Windows 8/10)

http://tips.hecomi.com/entry/2016/12/04/125641

MIT License

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Closed dj-kusuha closed 5 years ago

dj-kusuha commented 5 years ago

Hi hecomi.

I found a runtime error when using the IL2CPP scripting backend with Unity 2018.2.7f1.

NotSupportedException: To marshal a managed method, please add an attribute named 'MonoPInvokeCallback' to the method definition.

So I fixed it according to the error message. Could you check this pull request?