C++20 module support v2#1575

Merged

DefaultRyan merged 42 commits into

feature/modules_v2

May 20, 2026

Commits on Apr 25, 2026

Initial implementation of vs modules based on cppwinrtplus fork
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Rename WINRT_MODULE -> WINRT_IMPL_BUILD_MODULE; WINRT_CONSUME_MODULE -> WINRT_IMPORT_MODULE
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Namespace modules are winrt.Namespace. Non-namespace modules are winrt_base/winrt_numerics

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Bootstrap basic unit test

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Fix coroutine export. A few more unit tests.

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module_include, module_exclude

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Rename test_module to test_cpp20_module
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Nuget test project with module include/exclude

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Refine generated files in component.

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Added a type deriving from DependencyObject

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Basic module build/consume support

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Prefix namespace ixx files with "winrt." for consistency with module names and built ifc files.

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IFC needs better per-project scoping. Now it fully works end to end.
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Minor fix to TestModuleComponent2
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Documentation and polish.

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Fix CI failures

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Try for better std hygiene
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Address some PR feedback
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Better automation of AdditionalBMIDirectories

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Commits on Apr 26, 2026

Commits on Apr 27, 2026

Uniform namespace filtering
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Write trailing comments for #endif
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Clarify language version requirement
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Add source_location test

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Refactor/cleanup some string writers

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Add arm64 configs and replace bogus project guids with real guids.

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More cleanup of strings. Collected common macros into base_macros.h, generates into winrt/macros.h

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Commits on Apr 28, 2026

More strings cleanup. Emit a canonical winrt/base_macros.h

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More clarifications about guidance when sharing pre-built modules

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Commits on May 2, 2026

Ensure structured bindings are exported for IKeyValuePair

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Commits on May 4, 2026

Fix up module namespace exclude logic so it still generates import statements.
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Commits on May 5, 2026

intrin.h and <cstddef> only needed by base, not namespace modules
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Commits on May 6, 2026

Commits on May 7, 2026

Namespace modules now check version against imported winrt_base

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Commits on May 14, 2026

PR feedback: Test format, hash, natvis hook visibility, message on old compiler

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Commits on May 19, 2026

Commits on May 20, 2026