这是一个绘图的dll 可以绘制多种图形 如柱状图、饼状图、波形图 等 还可以画时钟-This is a drawing of the dll can draw a variety of graphics such as bar charts, pie charts, waveforms, etc. can also be painted clock

可以实现在Tchart控件上画出游标，方便数据的读取-Control can be achieved in Tchart draw cursor easy to read data