erik d1442e3747 Initial commit: Complete open-source Decal rebuild

All 5 phases of the open-source Decal rebuild:

Phase 1: 14 decompiled .NET projects (Interop.*, Adapter, FileService, DecalUtil)
Phase 2: 10 native DLLs rewritten as C# COM servers with matching GUIDs
  - DecalDat, DHS, SpellFilter, DecalInput, DecalNet, DecalFilters
  - Decal.Core, DecalControls, DecalRender, D3DService
Phase 3: C++ shims for Inject.DLL (D3D9 hooking) and LauncherHook.DLL
Phase 4: DenAgent WinForms tray application
Phase 5: WiX installer and build script

25 C# projects building with 0 errors.
Native C++ projects require VS 2022 + Windows SDK (x86).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-08 18:27:56 +01:00

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DHS.DLL (Decal Hotkey System)

Origin

Factored out of the old DecalInput.DLL — the hotkey registration, detection, and dispatch logic was extracted into its own COM server.

Binary Facts

Size: 139 KB
Type: COM in-process server (DLL)
Standard 4 COM exports: DllCanUnloadNow, DllGetClassObject, DllRegisterServer, DllUnregisterServer

What It Does

Manages hotkey bindings for Decal plugins — registering key combinations, detecting when they are pressed, and firing events to the appropriate plugin. This was previously part of DecalInput's responsibilities.

Reconstruction Notes

COMPARE WITH: The old source files:
- Native/DecalInput/Hotkey.cpp
- Native/DecalInput/Hotkey.h
The DHS module almost certainly started as a copy of that hotkey code, then was expanded and wrapped in its own COM server.
LOOK AT: Managed/Decal.Interop.DHS/ for the COM interface definitions this DLL must implement. That directory contains 13 decompiled C# files.
Strategy: Start by extracting the hotkey-related classes from the old DecalInput source, then wrap them in the COM interfaces defined by the interop assembly. The delta between old Hotkey.cpp and the new interop interfaces will show what was added/changed.

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