Add ATL Simple Object in Visual Studio 2017

Question

I am working with an old ATL/COM project in Visual Studio 2017.

In previous versions of Visual Studio you could select \"Add Class\" and then select the option \"Add

Answer 1

This problem is caused by changes in the project template and code wizard in version 15.3 of Visual Studio 2017.
The operation procedure has changed between version 15.2 or earlier and version 15.3 or later.
The blog article that explained this change is as follows.
Changes to Project Templates and Code Wizards in 15.3

Although it is described as an item in the release notes, there are few people who are watching, and details on how the actual is going on is unknown.
Visual Studio 2017 version 15.3 Release Notes
C++ Language Services
Project and Code Wizard
•We have rewritten several project and code wizards in the signature dialogue style.
•Add Class launches the Add Class wizard directly. All of the other items that were previously here are available under "Add > New Item".
•Win32 projects are under the Windows Desktop category in the New Project dialog.
•The Windows Console and Desktop Application templates now create the projects without displaying a wizard. There's a new Windows Desktop Wizard under the same category that displays the same options as before.