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Select automatic COM and WinRT output marshalling - #1770

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Jevan Saks (jevansaks) wants to merge 8 commits into
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Select automatic COM and WinRT output marshalling#1770
Jevan Saks (jevansaks) wants to merge 8 commits into
mainfrom
user/jevansa/com-out-ptr-marshalling-design

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@jevansaks Jevan Saks (jevansaks) commented Jul 30, 2026 •
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Summary

  • Selects automatic QI(IInspectable) detection for recognized COM object outputs.
  • Defines default-on behavior with a NativeMethods.json opt-out.
  • Documents source-generated P/Invoke, generated COM managed call paths, built-in COM, and Native AOT behavior.
  • Uses COM identity output for managed implementations; the consuming adaptive projection and generic cast select the requested interface.
  • Retains the caller-selected policy as the evaluated alternative and updates the comparison with the final decision.
  • Keeps exact-riid native-server output, unique COM ownership, and non-canonical output pairs out of scope.

Validation

Docs-only change.

Implementation: #1771

Generated with Copilot CLI, model: GPT-5.6 Sol.

Jevan Saks (jevansaks) and others added 3 commits July 29, 2026 17:03
@jevansaks
Document COM output pointer marshalling design
13c754f 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks
Use raw GeneratedComInterface companions
b3833e2 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks
Document direct managed COM receivers
194cea0 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks Jevan Saks (jevansaks) mentioned this pull request Jul 30, 2026
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Jevan Saks (jevansaks) commented Jul 30, 2026

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Prototype implementation: #1771

@jevansaks
Clarify COM object out marshalling design
f047a25 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks Jevan Saks (jevansaks) changed the title Design policy-based COM output pointer marshalling Design COM object out-parameter marshalling policies Jul 30, 2026
@jevansaks
Propose adaptive COM and WinRT output marshalling
c9d185d 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks Jevan Saks (jevansaks) changed the title Design COM object out-parameter marshalling policies Design adaptive COM and WinRT object out marshalling Jul 30, 2026
@jevansaks
Compare COM and WinRT marshalling designs
f45dfb5 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks Jevan Saks (jevansaks) changed the title Design adaptive COM and WinRT object out marshalling Compare COM and WinRT object out marshalling designs Jul 30, 2026
@jevansaks
Select automatic COM and WinRT marshalling
618784e 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
@jevansaks Jevan Saks (jevansaks) changed the title Compare COM and WinRT object out marshalling designs Select automatic COM and WinRT output marshalling Jul 31, 2026
@jevansaks
Simplify generated COM output design
3896fc3 
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: b24622c7-c9d6-44f0-9a20-85aac5ff11d6
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