这是一个屏幕取色的小应用程序，在实际开发工作中经常用到，并且也很有帮助-This is a small color screen access applications, in the actual development work frequently used, and also very helpful

进度条，qprogressindicator类让应用程序展示一个长任务正在执行-The QProgressIndicator class lets an application display a progress indicator to show that a lengthy task is under way. Will work at any size.