此程序可用来学习异常处理机制，用例题演示了怎样利用try-catch-finally语句捕获和处理异常-This procedure can be used to study exception handling mechanism, with the example demonstrates how to use try-catch-finally statement to catch and handle exceptions

wince下的按键测试代码用.net编写，可以捕捉按键的键值和类型并显示-The test code wince buttons with.net writing, which may catch the key value and type of buttons and displayed