好的历程 按键处理代码，蜻蜓点水式颠覆传统教科书按键技术， 可识别单键组合键 ， 真正提高程序效率 值得推鉴使用。有详细的注释。-A good journey Some key processing code, touched the traditional textbook pressed key technology, can identify a single bond key combination, really improve the efficiency of the progra