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

测试Qt下的OpengGL的性能。可以借鉴着参考下，如何搭建Qt+OpenGL-Performance testing Qt OpengGL under. You can draw a reference, how to build Qt+OpenGL

1、Qt实现绘制正弦曲线 2、实现拖动效果 3、实现放大、缩小 4、实现绘制越界问题(1, Qt draw sine curve 2, achieve drag effect 3, achieve amplification and contraction 4, the realization of cross-border rendering problems)