VB多窗体切换代码，打开不同颜色的子窗口，主要学习一下VB的窗体控制。在窗口上有三个代表红、黄、绿三色的按钮，当你点击的时候，弹出的窗体的背景就是对应的颜色，再次点击其它的，会切换到其它对应的颜色上来，其实这种效果不是太常用，不过研究窗体运行机制倒是有用处。-VB Form to switch the code over to open sub-windows of different colors, mainly to learn about VB Form control. In the window there are three represents red, yellow, and green button, the time when you click, pop-up form that corresponds to the color of the background, once again click on the other, will switch to the other corresponding to the color up, in fact this results are not too common, but the study does have a useful operating mechanism form.