@namoninja I just wanted to send some kudos your way. This feature is something I have wanted for a long time for the sake of better support for Aero Glass applications. I also have a bug that is affected by the lack of `DwmExtendFrameIntoClientArea`: [#53548](https://bugs.winehq.org/show_bug.cgi?id=53548). I expect that it will take quite some determination to get this feature integrated. The maintainers will set a very high bar for inclusion, and there will likely be multiple rounds of design review and rework. However, you have shown great tenacity in bringing the project this far, and I am very hopeful that you can bring it to completion. I would just advise that you take it step by step making self-contained submissions with lots of unit tests. Thank you again for your work on this. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/10180#note_130621