//设置高质量插值法 e.Graphics.InterpolationMode = InterpolationMode.NearestNeighbor; //设置高质量,低速度呈现平滑程度 e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;

使用glControl https://blog.csdn.net/xcx573/article/details/105035561 https://blog.csdn.net/ken0online/article/details/132363856

TextBox实现背景透明效果 https://blog.csdn.net/weixin_39237340/article/details/113705901