动态显示当前坐标，创建自己的工具栏和状态栏，学生信息演示程序-current dynamic display coordinates, and to establish its own toolbar and status bar, the student information Demonstration Program

封装好的进度条，可以动态实时创建，非常好用。-Packaged progress bar, you can create a dynamic real-time, very easy to use.