VC++MFC使之包含XP或win7风格-VC++MFC include XP or win7 style

后台截图，可指定大小，位置，窗口句柄，可截取视频，截取后保存为BMP格式图片。不支持WIn7 Aero.-Backstage shots, you can specify the size, location, window handle, you can intercept the video and save as BMP format picture after the interception. Does not support WIn7 Aero.