创建一个带有模拟钢琴键盘的面板，用户可以通过键盘或者鼠标来“敲击”钢琴键盘发出声音，也可以通过电脑键盘的组合键实现钢琴的高音。-Simulated piano keyboard panel is created with a user through the keyboard or mouse to " tap" the piano keyboard sound, treble piano can also be a combination of computer keyboa