基于UCGUI3.98，h文件配置的240*240尺寸，8bit per pixel。如果编译不过打开guiconf.h里的一些宏。
该文件实现一个时钟，绘制时钟背景可以使用纯色背景，bitmap背景，jpeg背景。绘制时钟的指针可以使用Line或者多边形。切换这些功能使用宏控制，详情见文件开头部分的"Ctrl Marco Begin"　至 "Ctrl Marco End"　之间的用于控制绘制模式的宏及其相应注释。
整套代码包含许多注释，方便初学者。本人也才摸索一周，部分代码参考网络上其他文档，有不完善的地方见谅。(Based on UCGUI3.98, h file configuration 240 * 240 size, 8bit per pixel. If you compile failed,try to open guiconf.h some macros.
The file to achieve a clock, draw the clock background can use a solid color background, bitmap background, jpeg background. Pointers that draw clocks can use Line or polygons. To switch between these functions use the macro control as described in the macros for controlling the drawing mode between "Ctrl Marco Begin" and "Ctrl Marco End" at the beginning of the file and their corresponding comments.
The entire code contains many notes for beginners. I also groping for a week, some code reference other documents on the network, there are imperfections forgive me.)