https://bugs.winehq.org/show_bug.cgi?id=54888
Olivier F. R. Dierick o.dierick@piezo-forte.be changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |o.dierick@piezo-forte.be
--- Comment #2 from Olivier F. R. Dierick o.dierick@piezo-forte.be --- (In reply to bcjon07 from comment #0)
Other clues: Transparent windows implemented using AllowTransparent are valid on Wine, while those implemented using WindowChrome are invalid. On Windows, transparent forms implemented using WindowChrome are frequently used due to better performance(usually). According to my pre investigation, AllowTransparent seems to be implemented using GDI, but WindowChrome mainly uses the DWM API
(In reply to Fabian Maurer from comment #1)
I tested on my Windows VMs, but there is no transparency.
Hello,
That may be a limitation of the VM's graphical emulation. It sounds like WindowChrome relies on hardware acceleration.
Regards.