VC++ Runtime 2015-2019一体包，微软最新版, 多版本打包到一个包里，不同于之前的独立各个版本，这里是共享的；官方解释 Note Visual C++ 2015, 2017 and 2019 all share the same redistributable files. For example, installing the Visual C++ 2019 redistributable will affect programs built with Visual C++ 2015 and 2017 also. However, installing the Visual C++ 2015 redistributable will not replace the newer versions of the files installed by the Visual C++ 2017 and 2019 redistributables. This is different from all previous Visual C++ versions, as they each had their own distinct runtime files, not shared with other versions.

最近在学习多文档编程，做了一个小例子放这边备查。 里面有做了多模板，创建子窗口，及在窗口上增加控件，不过没有做注释，希望下次还能看得懂。