本实例实现走懂的图形时钟的绘制，首先由DrawClock（）子函数画出表盘，再由gettime（&newtime）检测系统时间，每秒钟调用DrawClock（）更新一次表盘。-The examples were to go to understand the graphics clock drawing, first by DrawClock () Functions to draw the dial, then gettime (&　newtime) detection system time, every second call DrawClock () update the dial.