通过URL从网页上抓取图片,本程序基于MFC的对话框的工程，通过在对话框中的编辑框中输入图片的URL，点击ShowPic按钮就会从给定的URL网页中获取图片-Crawl through the pictures from a web page URL, the program is based on MFC dialog project, through the edit box in the dialog box enter the picture URL, click the button