自己绘制的进度条，希望能让大家了解中间的原理。-Drawn their own progress bar to let us to know the Central Principle.

使用wtl实现的dockbar，可以学习其中dock的原理--Dockbar which has used wtl to realize,you can learn the dock principle from it

利用MFC单文档空白程序实现工具条状态条的增加删除功能，所有代码均手工添加，让大家理解程序运行原理。-MFC single document using the toolbar space program to achieve the increase in the status bar delete function, all of the code were added by hand, so that we understand the running principle.