linux下的一个基本定时器，精确到ms。访问接口类似于windows下的setTimer接口。-linux under a basic timer, accurate to ms. Access interface similar to the windows under the setTimer interface.

在linux QT4下做的图片浏览器，无错，完成了浏览器的基本功能，以及增加了画板功能以及通过定时器实现了“飞舞的蝴蝶”。-Linux QT4 picture browser, error-free completion of the basic functions of the browser, as well as to increase the drawing board and through the timer, the "butterflies".