addercalc一个用国内开源的Duilib库写的加法计算器源码,非常适合Duilib和想了解DirectUI思想思想的朋友,有利于快速的利用Duilib开发程序的入门。-addercalc a library with a domestic source of Duilib calculator source code written in addition, the UI library based on DirectUI minds, and to achieve a good cust