Avoid multiplication of progress bar control and display generic progress indicator on top of MODAL (and non-modal) forms. Late binding technology is used. DLL-ed for your convenience.

• 在MODAL(以及非modal的)窗体中避免出现多个进度条控件，并显示普通的进度指示器。使用了后期绑定术。编写成DLL以供使用方便。