[Perdixky]

MI function table members are currently emitted as IntPtr, so projections expose addresses rather than callable signatures. For example, MI_ApplicationFT.NewSession becomes isize in Zig.

Add named unmanaged delegates in manual/Mi.cs and map the anonymous members to them in emitter.settings.rsp. This covers all 172 anonymous function pointers in 19 MI function tables, both session callbacks, and six nested operation callback parameters. Four additional delegates preserve the session close completion callback, prompt/error responses, and result acknowledgements. Preserve the native calling convention, primitive widths, const annotations, parameter directions, optional parameters and expressible buffer counts.

New delegate names follow the existing MI_ProviderFT_* convention: <struct>_<field>. Nested completion/response/acknowledgement callbacks receive explicit helper delegate names; these names are introduced by this patch, while their signatures come from mi.h.

Fixes #842.

Validation:

• Build the upstream emitter, scraper and Windows.Win32.Tests project: passed.
• Scrape the unmodified SDK mi.h and emit baseline/patched MI-only WinMD with the real upstream emitter: passed.
• Added 30 metadata regression cases: baseline fails all 30; patched passes all 30.
• Compile 180 native prototype comparisons against SDK mi.h on Windows x86, x64 and ARM64: passed.
• Generate Zig bindings with the real zigwin32gen and cross-compile direct session creation, enumeration, invocation, result retrieval and close calls on all three architectures: passed.

Validation ran on Linux. The focused scraper harness disables the Linux-only UnixTypes option to match Windows character widths, and uses Zig's MinGW support headers with the repository's unchanged mi.h. The tests share the exact upstream MiTests.cs, with only the Windows-specific fixture path supplied by a temporary harness. For the pinned 42.0.39 Zig generator, the fixture adapts the metadata attribute namespace rename and overlays only the 26 modified existing MI types and 178 new delegates onto its baseline metadata text. No MI signature is rewritten for Zig. The full Windows SDK crossarch build and live Windows MI execution remain for Windows CI/runtime validation.

Header-only inline convenience functions are outside this change; clients can call the typed function tables directly.

[Perdixky]

@microsoft-github-policy-service agree

[Jevan Saks (jevansaks)]

Thanks Perdixky for the contribution! I've been working to roll back these hand-authored things that are outside the headers. I'll take a look at the toolchain and figure out why these things aren't being scraped out of the headers.