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  1. Qt
  2. QTBUG-69711

[REG 5.9->5.10] QWindow doesn't restore previously maximized state after calling showMinimized()

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Details

    • Bug
    • Resolution: Unresolved
    • P3: Somewhat important
    • None
    • 5.10.1, 5.13.0
    • GUI: Window management, QPA: X11/XCB
    • None
    • Win10
    • Linux/X11, Windows

    Description

      After promoting Qt to 5.10.1, I found this issue. My application is a frameless window with custom minimize, maximize, close buttons. When I maximize the window, then minimize it, finally restore it by clicking the app icon on Windows' taskbar. The window doesn't restore maximized state.

      With Qt 5.9.3, it's OK.

      Attached an sample to reproduce the issue.

      1. Run the sample.
      2. Maximize the window.
      3. Click the minimize button in the center of the window.
      4. Restore the window by Windows taskbar.
      qtbug69711_qwin:
 "5.11.1 xcb" () 
click to minimize
slotWindowStateChanged Qt::WindowState(WindowNoState)
slotWindowStateChanged Qt::WindowState(WindowNoState)
slotWindowStateChanged Qt::WindowState(WindowMaximized)
mousePressEvent about to call showMinimized() QFlags<Qt::WindowState>(WindowMaximized)
slotWindowStateChanged Qt::WindowState(WindowMinimized)
mousePressEvent after showMinimized: QFlags<Qt::WindowState>(WindowMinimized)
slotWindowStateChanged Qt::WindowState(WindowMinimized)
slotWindowStateChanged Qt::WindowState(WindowMinimized)
slotWindowStateChanged Qt::WindowState(WindowNoState)

       

      Attachments

        1. qtbug69711_511_diag.diff
          2 kB
        2. qtbug69711_log.txt
          20 kB
        3. qtbug69711_qml.zip
          2 kB
        4. qtbug69711_qml.zip
          2 kB
        5. qtbug69711_widget.zip
          1 kB
        6. qtbug69711.zip
          2 kB
        7. qtdiag.txt
          7 kB
        8. untitled.zip
          5 kB

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-107733 showMinimized() prevents Qt Quick Window from being re-maximized via the taskbar

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-70878 Windows taskbar restore qml minimized window

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-57882 Cannot show maximized window minimized

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-69888 switching from fullscreen to windowed mode not working

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-107733 showMinimized() prevents Qt Quick Window from being re-maximized via the taskbar

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-76354 QMainWindow::showMinimized() doesn't work on Ubuntu 18.04(GNOME Shell)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Activity

            People

              liaqi Liang Qi
              surka surka
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              Dates

                Created:
                Updated: