卡耐基ssd4，Exercise2；display a descr iption of the component’s contents；search the displayed descr iption for occurrences of that keyword or phrase,Carnegie ssd4, Exercise2 display a descr iption of the component s contents search the displayed descr

一个简单的界面，实现了LABEL,BUTTON等控件的主要功能-A simple interface, the implementation LABEL, BUTTON, etc. The main functions of control

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