章给出VC 和Flash 之间一种基于自定义字符串的双向消息互传机制, 并应用该机制用VC 和Flash 联合实现进度条的效果-Between VC and Flash Chapter gives a custom string based on each two-way message transfer mechanism and application of the mechanism of joint implementation with the VC and the Flash pro

通过VC，实现下载进度时的显示的进度条的百分比-Through the VC, when the download progress to achieve the progress bar shows the percentage of