1.设计一个窗口，在该窗口中练习键盘的响应，要求如下：

(1)单击键盘上的向上箭头时，窗口中显示"You had hitted the UP key"；

(2)单击键盘上的Shift键时，窗口中显示"You had hitted the SHIFT key"；

(3)单击键盘上的Ctrl键时，窗口中显示"You had hitted the CTRL key"；

(4)单击键盘上的Ctrl+A键时，窗口中显示"You had hitted the CTRL+A key"；

(5)单击键盘上的Shift+B键时，窗口中显示"You had hitted the SHIFT+B key"；-1 Design a window in the window exercises keyboard response, the following: (1) Click the up arrow on the keyboard, the window displays " You had hitted the UP key"　 (2) Click on the keyboard Shift key, the window displays " You had hitted the SHIFT key"　 (3) Click the Ctrl key on the keyboard, the window displays " You had hitted the CTRL key"　 (4) Click the button on the keyboard Ctrl+A When the window displays " You had hitted the CTRL+A key"　 (5) Click the button on the keyboard Shift+B, window displays " You had hitted the SHIFT+B key"