VC++ 实现一个简单的映射转换器源码，可在单位、值之间转换，可设置英寸为逻辑或物理的，关于映射转换器以前遇到的不多，希望这一个小小的例子能为你提供一些参考。-VC++ to achieve a simple mapping converter source, between units, the value of the conversion, you can set in. logical or physical, not much about the mapping converter p