[Bug 55772] New: uxtheme:system - test_EnableThemeDialogTexture() fails on Windows 7

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55772

Bug ID: 55772
           Summary: uxtheme:system - test_EnableThemeDialogTexture() fails
                    on Windows 7
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: uxtheme
          Assignee: [e-mail]
          Reporter: [e-mail]

uxtheme:system - test_EnableThemeDialogTexture() fails on Windows 7:

system.c:1947: Test failed: Expected brush changed.
system.c:1954: Test failed: Expected a different brush.
system.c:1972: Test failed: Expected a different brush.
system.c:1983: Test failed: Expected a different brush.
system.c:2007: Test failed: OpenThemeData failed.
system.c:2011: Test failed: GetThemePartSize failed, hr 0x80070006.
system.c:2034: Test failed: msg 0x132: Expected (-1,-2), got (0,0).
system.c:2042: Test failed: msg 0x132: Expected mode 0x1, got 0x2.
system.c:2057: Test failed: msg 0x132: Expected brush color 0, got 0xf0f0f0.
system.c:2058: Test failed: msg 0x132: Expected brush style 0x3, got 0.
system.c:2063: Test failed: msg 0x132: GetObjectA failed, error 2147943568.
system.c:2069: Test failed: msg 0x132: Expected a different brush.
system.c:2077: Test failed: msg 0x132: Expected a different brush.
system.c:2034: Test failed: msg 0x135: Expected (-1,-2), got (0,0).
system.c:2042: Test failed: msg 0x135: Expected mode 0x1, got 0x2.
system.c:2057: Test failed: msg 0x135: Expected brush color 0, got 0xf0f0f0.
system.c:2058: Test failed: msg 0x135: Expected brush style 0x3, got 0.
system.c:2063: Test failed: msg 0x135: GetObjectA failed, error 2147943568.
system.c:2069: Test failed: msg 0x135: Expected a different brush.
system.c:2077: Test failed: msg 0x135: Expected a different brush.
system.c:2034: Test failed: msg 0x136: Expected (-1,-2), got (0,0).
system.c:2042: Test failed: msg 0x136: Expected mode 0x1, got 0x2.
system.c:2057: Test failed: msg 0x136: Expected brush color 0, got 0xf0f0f0.
system.c:2058: Test failed: msg 0x136: Expected brush style 0x3, got 0.
system.c:2063: Test failed: msg 0x136: GetObjectA failed, error 2147943568.
system.c:2069: Test failed: msg 0x136: Expected a different brush.
system.c:2077: Test failed: msg 0x136: Expected a different brush.
system.c:2090: Test failed: msg 0x136: Expected a different brush.
system.c:2092: Test failed: msg 0x136: Expected a different brush.
system.c:2034: Test failed: msg 0x138: Expected (-1,-2), got (0,0).
system.c:2042: Test failed: msg 0x138: Expected mode 0x1, got 0x2.
system.c:2057: Test failed: msg 0x138: Expected brush color 0, got 0xf0f0f0.
system.c:2058: Test failed: msg 0x138: Expected brush style 0x3, got 0.
system.c:2063: Test failed: msg 0x138: GetObjectA failed, error 2147943568.
system.c:2069: Test failed: msg 0x138: Expected a different brush.
system.c:2077: Test failed: msg 0x138: Expected a different brush.
system.c:2165: Test failed: Expected a different brush.
system.c:2246: Test failed: 0x1 to 0x6: Expected tab texture enabled.
system.c:2246: Test failed: 0x1 to 0xa: Expected tab texture enabled.
[...]
system.c:2327: Test failed: "Static" 0x10: Expected tab texture enabled.

See: https://test.winehq.org/data/patterns.html#uxtheme:system

The failures started on 2023-10-10 and are systematic. A bisect shows that they
started with the commit below:

commit 91e54e5f6d33ff17ce6ab904fbdcdeb6497de8cb
Author:     Helix Graziani 
AuthorDate: Tue Sep 26 20:03:44 2023 -0400

uxtheme: Add ShouldSystemUseDarkMode.

Since that commit does not modify test_EnableThemeDialogTexture() it must be
the new ShouldSystemUseDarkMode() call that breaks things (see bug 55771).