c++ - 软件升级这个功能有人做过吗？

Question

有木有大神做过软件升级这个功能？ 我现在要实现软件升级功能，首先要查找本地以安装程序的目录，那怎么实现查找已经安装的程序的目录呢？ 比如电脑管家就有软件升级的功能，它就能查找到你本机已经安装了这个程序，并且卸载旧版本再安装新版本？ 我就想知道它是怎么查找到我本机已经安装了这个软件的。。。有做过的大神给点思路！！！

Answer 1

For Windows systems, generally software is registered by writing a registry.
When installing the software, write the software’s installation path, version and other information into the registry. When needed
just find the right path and read it. Open regedit and take a look. You can see a lot of software information under LOCAL_MACHINE
=》SOFTWARE. Please refer to it and write it down