cad中用来预览dcl文件 省去反复调试查看，非常方便！-CAD used to preview the DCL file Eliminating repeated debugging view, very convenient!

打开和预览dcl文件，显示对话框效果。使用平台：AutoCAD。编写语言lisp。(View and pen dcl document to show the visual effect of the dcl dialog. The reason is that the dcl code couldn't show the dialog straightly by the dcl document. The working environment is AutoCAD, and the lang