11设计类似QQ的编辑框安全控件，用以了解mfc触发机制-11 design similar QQ edit box security controls to learn mfc trigger mechanism

在开发程序时，有时需要在状态栏中放置一些控件，实现特殊的设计效果或功能。本列在状态栏中放置进度条，显示当前程序执行进度。-In the development process, sometimes need to put some controls in the status bar to achieve special design effects or features. This column in the status bar to place the progress bar show

滑动条编程可以左右滑动的控件设计可以简化自己设计 具有直接使用价值-Programming can slide the slider left and right controls to simplify the design of direct use value of their own design