报警控制在各种工业控制系统中是经常见到的,一般用于报警的方法有很多,有用文本标示,有用图形表示的,其原理不外乎构造CDC类对象然后利用提供的各种基本图元属性进行图形绘制就可以了.这里我们来制作一个能够显示报警文本,当出现某个报警的时候我们然背景进行闪烁就可以实现功能了. -Alarm control in a variety of industrial control systems is often seen, generally there are many ways for the alarm, useful text marking, useful graphical representation, and its principle of no more than construct CDC class object and then use the basic plan offered by a variety of Yuan properties Rendering on it. Here we can display alarm to create a text, when there is an alarm when we ran background flicker can be achieved function.