创建和显示CAD的面板。创建一个可停靠面板，两个页面，一个为自定义palette，动态创建了一个按钮，可以响应消息。代码简洁明了，对于学习和理解CAD的面板很有帮助。个人编写。-Create and show CAD palette.Create a dockable panel,two palette.One of them is custom palette,contains a dynamic creating button that can reponse to clicking.It

用于在AutoCAD中绘制渐开线。 用法：运行AutoCAD并加载模型空间，加载并运行此宏，输入相关参数后点击按钮，然后模型空间就会出现图形。(Used to draw the involute in AutoCAD. Usage: run the AutoCAD and load the model space, load and run the macro, click the button after entering the relevant parameters, and then t