主要讲述windows下的Qt Creator下载、安装和最简单程序的编写，然后在附录里又讲解了两种其他的编写程序的方法。在linux下Qt Creator下载、安装及程序的编写基本与此相同。-Focuses on the windows of Qt Creator download, install and easiest to write the program, and then again in the appendix to explain the method of preparat