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Windows 11, Visual Studio 2017, Version 15.9.70, C++
With no further answers posted in another thread I gave up and uninstalled VS 2019 then discovered I cannot find the install app for it. Searches for 2019 produced results that said load one of several older versions, but always went to version 2022.
So found I had kept a 2017 install app and re-installed that. Now am working on any path to create an app with a dialog. First try is to use template “Windows Desktop Application,” with C++. Build the starter app and it appears to open a dialog.
BUT, I cannot find the dialog to edit. Where the heck is the dialog that I can use to drag and drop controls from the Toolbox option?
Well, keep searching and see what I can find.
A C++ Windows desktop application created by the template will contain a single dialog that is invoked from the Help->About menu. The template never creates an application that uses a dialog as its main window.
You seem to be confusing the way that a C#/VB Windows Forms project works with C++ Windows Desktop project created by the template.
In your previous question at https://learn.microsoft.com/en-us/answers/questions/2157095/create-c-gui-project @Castorix31 provided an answer containing a link to an archived thread for using VS2017 to create a C++/CLI to create a Windows Form Application.
If you want to stick with unmanaged C++ code the simplest method is to use the MFC dialog-based application. At this point I hope you are able to manage that with your VS2017 installation.