安装：Install-PackageOpenTKhttps://opentk.net/learn/chapter1/1-creating-a-window.html?tabs=baseclass-opentk4%2Cgamewindow-ctor-opentk4%2Cgamewindow-run-opentk4%2Ckeypress-opentk4usingOpenTK.Graphics.OpenGL4;usingOpenTK.Windowing.Common;usingOpenTK.