Delphi:Delphi喷枪效果，鼠标放在那不动，会看到喷出来的小点点，很奔放的感觉，PhotoShop中的画笔样式中，有类似喷枪的效果，本源码运行效果如上所示。

-Delphi: Delphi airbrush effects, do not move the mouse over it, you will see a small little erupted, very imaginative feeling, PhotoShop the brush style, similar to the effect of the gun, the source operating results as shown above.