On Tue, Feb 3, 2026 at 8:45 PM coroberti <[email protected]> wrote:
> On Tue, Feb 3, 2026 at 7:02 PM Wladimir Leuschner < > [email protected]> wrote: > >> >> thank you for reporting the bug. This behaviour is indeed a regression >> and was introduced with >> https://codereview.qt-project.org/c/qt/qtbase/+/619145 to 6.10.2 and >> 6.11beta2 by me. Sorry for that. A bug report related to the issue seems >> already created with https://qt-project.atlassian.net/browse/QTBUG-143832. >> In case you have additions to the report you are welcome to comment on the >> bugtracker. >> Best regards, >> Wladimir Leuschner >> > >> ------------------------------ >> *Von:* Interest <[email protected]> im Auftrag von >> coroberti <[email protected]> >> *Gesendet:* Dienstag, 3. Februar 2026 11:35 >> *An:* Qt Interest <[email protected]> >> *Betreff:* [Interest] Qt-6.10.2 Widgets - Qt::CustomizeWindowHint Is >> Broken on Windows >> >> 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? >> >> Hi, Even if it were reversed, there is still an issue with presentation of the left angle Windows icon on the window. Perhaps the issue is the general for Qt-6.10 series. When the flag Qt::CustomizeWindowHint is set, the small windows icon is not shown unless one adds ad least a single control like flags |= Qt::WindowCloseButtonHint It is just ignored: this->setWindowIcon(QIcon(appIconPath)); Thanks, Robert
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