Microsoft came out with WinUI 3 since I started working on a new Replicator, so of course I decided to use it. Since I made that decision, I upgraded the version number to 3 instead of 2. I decided to use C++ instead of C# for my own pleasure. It’s more of hassle, it’s less safe, but it’s super fast and you can do anything with it.
Anyway, I wondered why Microsoft is still using LocalAlloc() in this example code, so I clicked Search Online.
https://www.bing.com/search?q=C%2b%2b+HLOCAL+__stdcall+LocalAlloc(UINT+uFlags%2c+SIZE_T+uBytes)

Then I avoided wondering how I can make Visual Studio search Duck Duck Go instead of Bing because, because I was still wondering about that LocalAlloc() thing, so I clicked
https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-localalloc
and deduced they’ve just copy and pasted this example for decades.
Later, I was wondering about the distinction between a Window and a Page on WinUI3, so
https://stackoverflow.com/questions/71588868/what-is-the-difference-between-a-window-a-page-in-winui

Some help with launching a Page in a Frame in a Window, it’s C# and I’m using C++ but that’s sorta irrelevant:
https://stackoverflow.com/questions/68019995/winui-3-0-desktop-c-sharp-page-navigation

Accompanying Sample App for WinAppSDK: https://github.com/microsoft/WinUI-Gallery