Comments (3)
The [GeneratedComClass]
attribute is unrelated to this source generator. CsWin32 generates all the code necessary for interop of the APIs it emits, as far as I'm aware. I'm not too familiar with that attribute but from the docs you linked to (thank you!) it seems that that triggers a source generator to fill in more. But as a source generator itself, CsWin32 cannot depend on the compiler running any other source generator after itself, so it must be self-sufficient.
Further, I see that both IDesktopWallpaper
and DesktopWallpaper
are in the metadata, so I expect both can be emitted by CsWin32.
Can you clarify what it generates and how that falls short to support your scenario?
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CsWin32 currently uses the built-in COM interop system via [ComImport]
(when runtime marshalling is enabled), which isn't trimming or AOT compatible. [GeneratedComClass]
and [GeneratedComInterface]
are two attributes introduced in .NET 8 to support the new source-generated COM wrappers, which are trimming and AOT compatible.
As far as I'm aware, when an attribute is marked with [GeneratedComInterface]
, a source generator then provides the [IUnknownDerivedAttribute<T,TImpl>]
(source code) attribute for it, which provides metadata for the StrategyBasedComWrappers
class to initiate RCWs and CCWs for the interface.
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when runtime marshalling is enabled
I think you've already qualified your statement appropriately here. If you don't want to rely on the built-in COM interop system, turn off allowMarshaling
in the NativeMethods.json
file. This is what WinForms does in order to get trim-friendly COM interop from CsWin32.
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Related Issues (20)
- CS8785 when adding a locally built copy of Windows.Win32.winmd HOT 4
- structs with VariableLengthInlineArray and SizeOf(0) HOT 4
- CsWin32 generates `SafeHandle` parameter for `LPPROC_THREAD_ATTRIBUTE_LIST` in `CreateRemoteThreadEx` HOT 6
- SafeHandle overload should be generated for functions with `out` parameters HOT 5
- SetupDiGetDeviceInterfaceDetail() throws MashalDirectiveException "Pointers cannot reference marshaled structures" HOT 7
- COM Out arguments in DXGI/D3D11 are suddenly unmanaged HOT 4
- Publish WPF Desktop App not possible HOT 15
- IShellItemImageFactory.GetImage should return HRESULT HOT 1
- Add support for MAKEPOINTS, GET_X_LPARAM, GET_Y_LPARAM macros HOT 1
- APPBARDATA should compile on AnyCPU HOT 2
- CsWin32 should avoid Unsafe.SkipInit when it doesn't exist in the compilation HOT 1
- WlanOpenHandle doesn't support SafeHandle HOT 1
- The API "Gdi32" is ambiguous HOT 4
- Add `GET_WHEEL_DELTA_WPARAM` macro
- `TASKDIALOGCONFIG.pfCallback` should use associated enum for `msg` parameter
- Broken `VariableLengthInlineArray<T>` after upgrade from 0.3.49-beta to 0.3.106 HOT 8
- NetFramework - Unsafe.SkipInit(out T value) unavailable HOT 3
- Inconsistent const in parameters of RmRegisterResources HOT 9
- LocalExternFunctions should use `DefaultDllImportSearchPaths`
- Code Quality: Use `WinMdRoot` instead of `winmdroot` to supress CS8981 (type name is ASCII lowercase only) HOT 5
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