Delphi:使用Delphi中tPaintBox组件的Canvas属性绘图，绘制图案，一个椭圆形的网格图案，并可以给这个图案的线条着色。点击“执行”按钮，程序即开始执行图案绘制功能。

-Delphi: Delphi using the Canvas property in tPaintBox assembly drawing, draw patterns, an oval-shaped grid pattern, and this pattern can give the line coloring. Click the "Run" button, the program begins execution pattern drawing functions.