如何自定义C++/WinRT组件中PCH文件的名称？后续版本能否支持？

Let's break down your questions and concerns clearly:

Current State of Customization #

Right now, the module.g.cpp file generated by the Windows Runtime Component (C++/WinRT) template in Visual Studio does hardcode the pch.h include—there’s no built-in option in the template to change this during project setup.

That said, you can work around this manually:

• Open the generated module.g.cpp file and replace #include "pch.h" with your custom precompiled header filename (e.g., #include "MyProjectPch.h").
• Don’t forget to sync your project settings: Go to Project Properties > C/C++ > Precompiled Headers, update the "Precompiled Header File" field to match your custom filename, and ensure the "Precompiled Header" option is set to either "Create (/Yc)" or "Use (/Yu)" as needed.

If you’re invoking cppwinrt.exe directly (outside the VS template), there’s currently no dedicated command-line switch to specify a custom PCH filename—this is a limitation of the current tooling.

Request for Future cppwinrt.exe Support #

Your ask to add custom PCH filename support to cppwinrt.exe is totally valid. Many teams use custom PCH names aligned with their project naming conventions, so adding a command-line switch (like /pch:<custom-filename>) would make the tooling far more flexible. It would also make sense to update the VS template to include an optional field for specifying the PCH filename during project creation, eliminating the need for manual edits entirely.

XAML Compiler Parallel Limitation #

You’re spot-on to highlight the similar restriction in the XAML compiler. Unifying the solution here makes perfect sense—adding matching switches or template options for both tools would create a consistent, streamlined experience, which is especially valuable for teams enforcing standardized project structures across their codebases.

If you want to advocate for this feature, consider submitting a request through the Visual Studio Feedback Hub—this is the official channel where the C++/WinRT and XAML tooling teams gather user input for future improvements.

内容的提问来源于stack exchange，提问作者Meteorhead