完成一个二维变换演示程序，功能如下：

 　　黑色背景, 绘制正方形

 　　单击鼠标左键, 正方形 逆时针旋转10度；单击鼠标右键, 正方形 顺时针旋转10度.

 　　单击鼠标中键, 退出程序

 　　键入’x’,　　沿x轴正向平移；键入’X’,　　沿x轴负向平移

 　　键入’y’,　　沿y轴正向平移；键入’Y’,　　沿y轴负向平移

 　　键入’z’,　　正方形缩小2倍；键入’Z’,　　正方形放大2倍

-The completion of a two-dimensional transform demo program, the following functions the: 　black background, draw a square the 　click the left mouse button, square 10 degrees counter-clockwise　Right-click a square rotated 10 degrees clockwise. 　click the right mouse button. to quit program 　typing ' x'　forward translation along the x-axis　typing ' X'　along the x-axis, the negative translation 　type ' y'　forward translation along the y-axis　typing ' Y' , the negative translation along the y axis 　type ' z'　square narrow 2 times　typing ' Z'　square zoom 2 times