模拟石英钟,通过Decodetime过程获取当前时间的时,分,秒,并利用Sin函数和Cos函数计算出时针,分针,秒针的移动度数,并在TImage组件上进行重画,在重画前将上一次的画线擦除-Analog clock, through the process of acquiring the current time Decodetime the hours, minutes, seconds, and use Sin and Cos function function to calculate t