输入多个线程的开始执行时间和结束执行时间，和线程ID，在坐标上画出不同时间段线程的运行情况-Input multiple-thread execution time and the end of the beginning of the execution time, and thread ID, the coordinates to draw a different time period of operation of the thread

基于QT的日K线图形界面绘制，其中包含链接SQL数据库，并利用里面的数据绘图-QT-based graphical interface K line drawing, which contains links to SQL databases and use the data inside the drawing