这是我写一个完成的Brew小程序，程序实现了IWindow接口，小程序中的窗体都可以从IWindow继承而来，阅读代码后可以明白怎么自己设计窗体相关的接口，加深对BREW接口机制的理解！-I wrote this is a small Brew completed the procedures, procedures to achieve the IWindow interface, procedures for the small window can be inherited from IW