[Bug 31203] Guild Wars 2 launcher no alpha on window - has large black border

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=31203

--- Comment #14 from Kai Blaschke <webmaster at thw-theorie.de> 2012-08-30 08:17:08 CDT ---
The patch partially solves the black box problem by alpha-blending the
background, which should improve the visual quality and somewhat reduce the
flickering, but the main problems remain:

- As mentioned, the window isn't updated if anything changes below it. I'm not
sure whether this happens for color-keyed windows or not, but what I've seen in
the past is that Wine doesn't regularly or even consistently checks for changes
in any element behind a window. In a Wine desktop, this should be relatively
simple (as Wine draws everything), but if you mix Wine and native OS windows,
this could be tricky. In Windows you can even smoothly play videos behind such
a layered window.

- Currently, you can't click through transparent areas in a window. Most modern
graphical UI environments support non-rectangular window shapes, so I don't
suspect this to be a big problem.

Some developers place layered windows on top of another window, making the
central area transparent to let the UI show through. Currently, such an
application would become unusable, as you would just see a big black area in
the center. Even with the partial patch, you would see the actual UI, but
couldn't interact with it.

In Windows 8, this whole problem will probably get worse, as Microsoft allows
devs to make client windows - which is potentially anything inside another
window - layered, too. From a developer perspective this is quite nice, as it
allows you to create some really fancy UIs, but in Wine, such application would
currently be unusable.

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