PowerToys/doc/devdocs/style.md

Coding Style

Philosophy

1. If it's inserting something into the existing classes/functions, try to follow the existing style as closely as possible.
2. If it's brand new code or refactoring a complete class or area of the code, please follow as Modern C++ of a style as you can and reference the C++ Core Guidelines as much as you possibly can.

Formatting

• We use .clang-format style file to enable automatic code formatting. You can easily format source files from Visual Studio. For example, CTRL+K CTRL+D formats the current document.
• If you prefer another text editor or have ClangFormat disabled in Visual Studio, you could invoke format_sources powershell script from command line. It gets a list of all currently modified files from git and invokes clang-format on them. Please note that you should also have clang-format.exe in %PATH% for it to work. The script can infer the path of clang-format.exe version which is shipped with Visual Studio at %VCINSTALLDIR%\Tools\Llvm\bin\, if you launch it from the Native Tools Command Prompt for VS.
• CI doesn't enforce code formatting yet, since we're gradually applying code formatting to the codebase, but please adhere to our formatting style for any new code.