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  1. Qt
  2. QTBUG-70810

Qt application stays on foreground after a call to QDesktopServices::openUrl

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.12.0 Beta 2
    • 5.6.3
    • GUI: Window management
    • None
    • Windows 10 Pro (multi-screen)
    • Windows
    • bde6a049494f40cd71004d6926899f115af0c3e6 (qt/qtbase/5.12)

    Description

      QDesktopServices::openUrl may launch an external application that will trigger our application to be deactivated, in that case, Qt attempts to close any active popup widget (see src\qtbase\src\widgets\kernel\qapplication.cpp line 3128).
      Unfortunaly this will make our application to be reactivated and its window to be set into foreground again as indicated by the following backtrace:

      qwindowsd.dll!QWindowsWindow::requestActivateWindow() Line 2012
Qt5Guid.dll!QWindow::requestActivate() Line 986
Qt5Widgetsd.dll!QWidgetPrivate::setFocus_sys() Line 6593
Qt5Widgetsd.dll!QApplicationPrivate::setFocusWidget(QWidget * focus, Qt::FocusReason reason) Line 1848
Qt5Widgetsd.dll!QWidget::setFocus(Qt::FocusReason reason) Line 6528
Qt5Widgetsd.dll!QApplicationPrivate::closePopup(QWidget * popup) Line 3887
Qt5Widgetsd.dll!QWidgetPrivate::hide_helper() Line 8019
Qt5Widgetsd.dll!QWidget::setVisible(bool visible) Line 8225
Qt5Widgetsd.dll!QWidget::hide() Line 7995
Qt5Widgetsd.dll!QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode mode) Line 8354
Qt5Widgetsd.dll!QWidget::close() Line 8413
Qt5Widgetsd.dll!closeAllPopups() Line 3007

      This may occur when the QDesktopServices::openUrl is triggered from a QMenu action shown on a popup (QWidget with Qt::Popup flag).
      See attachment to reproduce.

      A workaround is to call:

      if (QApplication::activePopupWidget()) QApplication::activePopupWidget()->close();

      before QDesktopServices::openUrl.

       

      Attachments

        1. popup_test.zip
          2 kB
        2. qtbug70810.zip
          2 kB
        3. qtbug70810_diag.diff
          2 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-25852 ActiveQt: QAxWidget steals keyboard focus

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-71991 [reg 5.12 b1->5.12 rc]/Windows: VST-embedded Qt app can't get focus back after clicking outside

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-70810
          # Subject Branch Project Status CR V
          241871,2 QtWidgets: Fix Qt application coming to the foreground when launching app by popup menu 5.12 qt/qtbase Status: MERGED +2 0

          Activity

            People

              qt.team.quick.subscriptions Qt Quick and Widgets Team
              e.jorge Jorge Emmanuel
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              Dates

                Created:
                Updated:
                Resolved:

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