vc2010 实现的超大位图滑动显示例程，响应WM_HSCROLL WM_VSCROLL 消息处理图片显示区域-vc2010 achieve large bitmap slide show routine, response WM_HSCROLL WM_VSCROLL message processing image display area

VC6.0编写的利用内存映射文件显示超大位图，鼠标按下松开可移动位图，鼠标滚动可以缩小放大位图-VC6.0 prepared using memory-mapped files display a large bitmap, mouse press release the movable bitmap mouse scroll can narrow the enlarged bitmap