[Interest] Qt-6.10.2 Widgets - Qt::CustomizeWindowHint Is Broken on Windows

[coroberti]

Hi,
Qt::CustomizeWindowHint was removing the three right-angle controls from a
window for many years,
but it seems to be now broken for Qt-6.10 at least on Windows.

 Qt::Window| Qt::WindowTitleHint |  Qt::CustomizeWindowHint
Thus, we were getting a window with a title-bar but without the 3 controls
from the right side.

Status for now is:
[image: image.png]

All controls are present and maximize is even active.

The attempts to remove the controls by getting flags and zeroing the bit
for flags
like & ~ individual hint - all failed.

The only workaround that works 4me is adding the
flag Qt::MSWindowsFixedSizeDialogHint - the consequence is that the image
icon gets out.

You can compile versus the Qt-6.10.2 and easily reproduce the break by
using the *Windows Flags Example*.

https://doc.qt.io/archives/qt-5.15/qtwidgets-widgets-windowflags-example.html

and the code:
https://code.qt.io/cgit/qt/qtbase.git/tree/examples/widgets/widgets/windowflags?h=5.15

Am I the only one to see it or most people do not advance to the latest Qt?

Thanks.

Kind regards,
Robert Iakobashvili
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