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[PATCH 0/2] MR9381: win32u: Don't strip semaphore / fence export info.
by Rémi Bernon (＠rbernon) 06 Nov '25

06 Nov '25

We now actually use it with host export types. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9381

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[PATCH v4 0/2] MR9299: ole32, combase: Add tests for COM context switching and delayed marshaling.
by Vibhav Pant (＠vibhavp) 06 Nov '25

06 Nov '25

When `RoGetAgileReference` is used with `AGILEREFERENCE_DELAYEDMARSHAL`, the returned `IAgileReference` also contains a reference to the apartment the object belongs to. Thus, when `IAgileReference::Resolve()` gets called, the object will get marshaled inside the owning apartment, not the caller's apartment. This seems to be made possible by the `IContextCallback` interface. It provides a way to (ab)use the marshaller to execute arbitrary code inside a COM context, which is an additional bit of state nested inside apartments. An apartment can contain multiple COM contexts, and the standard marshaller will keep track of which context a marshaled interface is bound to. All method calls through that marshalled pointer will be wrapped around a context-switch, even when the caller is in the same apartment. Additionally, creating an instance of the class `CLSID_IContextCallback` allows us to create new contexts inside an apartment. C++/WinRT makes use of `IContextCallback` to [implement support for C++ coroutines ](https://github.com/microsoft/cppwinrt/blob/ebace4abb8f48b6b9a612e8b84667e6044976a47/strings/base_coroutine_threadpool.h#L51)(co_await, et al) inside application STA code. Another use of COM contexts seems to be the UI code in WinRT applications, where certain objects can only be `Released`/destructed from the apartment they were created in. (I was able to find another instance of `IContextCallback` usage in the wild [here](https://github.com/Open-Shell/Open-Shell-Menu/blob/4ebeadd949d0550642…, to get an `IAccessible` implementation that has apartment-affinity). -- v4: ole32/tests: Add tests for IContextCallback::ContextCallback and CoDisconnectContext. combase/tests: Add tests for delayed marshaling of objects with apartment affinity. https://gitlab.winehq.org/wine/wine/-/merge_requests/9299

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[PATCH v3 0/2] MR9299: ole32, combase: Add tests for COM context switching and delayed marshaling.
by Vibhav Pant (＠vibhavp) 06 Nov '25

06 Nov '25

When `RoGetAgileReference` is used with `AGILEREFERENCE_DELAYEDMARSHAL`, the returned `IAgileReference` also contains a reference to the apartment the object belongs to. Thus, when `IAgileReference::Resolve()` gets called, the object will get marshaled inside the owning apartment, not the caller's apartment. This seems to be made possible by the `IContextCallback` interface. It provides a way to (ab)use the marshaller to execute arbitrary code inside a COM context, which is an additional bit of state nested inside apartments. An apartment can contain multiple COM contexts, and the standard marshaller will keep track of which context a marshaled interface is bound to. All method calls through that marshalled pointer will be wrapped around a context-switch, even when the caller is in the same apartment. Additionally, creating an instance of the class `CLSID_IContextCallback` allows us to create new contexts inside an apartment. C++/WinRT makes use of `IContextCallback` to [implement support for C++ coroutines ](https://github.com/microsoft/cppwinrt/blob/ebace4abb8f48b6b9a612e8b84667e6044976a47/strings/base_coroutine_threadpool.h#L51)(co_await, et al) inside application STA code. Another use of COM contexts seems to be the UI code in WinRT applications, where certain objects can only be `Released`/destructed from the apartment they were created in. (I was able to find another instance of `IContextCallback` usage in the wild [here](https://github.com/Open-Shell/Open-Shell-Menu/blob/4ebeadd949d0550642…, to get an `IAccessible` implementation that has apartment-affinity). -- v3: ole32/tests: Add tests for IContextCallback::ContextCallback and CoDisconnectContext. combase/tests: Add tests for delayed marshaling of objects with apartment affinity. https://gitlab.winehq.org/wine/wine/-/merge_requests/9299

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[PATCH 0/1] MR9380: ole32: Add support for writing VT_R8 property.
by JiangYi Chen (＠meshine) 06 Nov '25

06 Nov '25

As shown in the figure below: CAD software needs to read and write VT_R8 properties. ![截图_选择区域_20251106134015](/uploads/ac217f9974abf513b1f3d7a0624d9e69/截图_选择区域_20251106134015.png) Consistent with the reading of VT_R8 property in the propertystorage_read_scalar function, data of double type are not subjected to big-endian or little-endian conversion. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9380

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[PATCH v2 0/3] MR9373: dmusic,dmsynth: Reduce memory usage part 2
by Anton Baskanov (＠baskanov) 06 Nov '25

06 Nov '25

-- v2: dmsynth: Remove format and sample_count from struct wave. dmsynth: Allow zero-copy access to the sample data. dmusic: Defer releasing IDirectMusicDownload when can_free is FALSE. https://gitlab.winehq.org/wine/wine/-/merge_requests/9373

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Re: [PATCH v5 0/1] MR8988: win32u: change the stretch mode of dst hdc from BlackOnWhite to ColorOnColor...
by Kun Yang (＠yangkun) 06 Nov '25

06 Nov '25

@huw Please approve this merge request -- https://gitlab.winehq.org/wine/wine/-/merge_requests/8988#note_120980

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[PATCH v4 0/2] MR9260: winemac: Make macdrv_ime_process_key synchronous.
by Marc-Aurel Zent (＠mzent) 05 Nov '25

05 Nov '25

This is a simplification of https://gitlab.winehq.org/wine/wine/-/merge_requests/9246. -- v4: winemac: Remove QUERY_IME_CHAR_RECT and directly get ime_composition_rect. winemac: Make macdrv_ime_process_key synchronous. https://gitlab.winehq.org/wine/wine/-/merge_requests/9260

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[PATCH 0/5] MR9368: dsound: Use AUTOCONVERTPCM when initializing the render audio client.
by Giovanni Mascellani (＠giomasce) 05 Nov '25

05 Nov '25

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/9368

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Re: [PATCH v5 0/1] MR9375: opengl32: Avoid null pointer dereferences when filtering extensions. - approved
by Alexandre Julliard (＠julliard) 05 Nov '25

05 Nov '25

This merge request was approved by Alexandre Julliard. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9375

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Re: [PATCH v2 0/1] MR9376: winex11: Flush X requests in X11DRV_SetWindowText. - approved
by Alexandre Julliard (＠julliard) 05 Nov '25

05 Nov '25

This merge request was approved by Alexandre Julliard. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9376

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