Hide the icon when an app has no visible windows, or when all of its
visible windows would have no taskbar entry (i.e., they are owned or
have WS_EX_TOOLWINDOW or WS_EX_NOACTIVATE, but not WS_EX_APPWINDOW).
The dock icon returns if those conditions are no longer satisfied.

This behavior is behind a Mac Driver registry key,
EagerDockIconHiding (defaulting to true), to allow toggling it on a
per-app or global basis.

Const correctness is helpful for figuring out which fields are mutable
and which ones are intended to stay constant.

The parameter types are (size_t, size_t, BOOL).

Fixes: 4baada41

Fix Imperium: Greek Wars (1183470) launcher scrollbar largely drawn as transparent.

The application sets a hardcoded #ffffff as the color key for transparency. On Windows, the
scrollbar parts only have very few #ffffff pixels so the scrollbar is drawn as basically opaque.
If a theme that have many 0xffffff pixels is being used, then the bug reproduces as well on Windows.
I don't want to change the light theme style for this. So let's work around this by using #fefefe
instead of #ffffff. This have little difference visually.

Based on investigation done by Santino Mazza.

Microsoft Flight Simulator (2020) requires IDXGISwapChain4.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=56369

Signed-off-by: Gijs Vermeulen <gijsvrm@gmail.com>

Based on a patch by Qian Hong.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=44812Signed-off-by: Gijs Vermeulen <gijsvrm@gmail.com>

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=56491

winegstreamer: Reduce CLSID_decodebin_parser merit, so the MPEG splitter is chosen instead for MPEGs.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=56491