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

创建和显示CAD的Controlbar。内嵌一个对话框，可以响应控件消息。代码非常简洁，有注释，便于学习和理解。个人。-Create CAD controlbar.There is a Inner embedded dialog can respose.It is helpful to learn cad control bar and arx.