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  1. Qt
  2. QTBUG-56829

[regression] QDialog can go behind its parent window

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Details

    • Bug
    • Resolution: Duplicate
    • P2: Important
    • None
    • 5.6.1, 5.12
    • QPA
    • None
    • macOS

    Description

      A QDialog is able to go behind its parent window depending on the order show() is called (or a series of hide()/show() calls): If the child is shown before the parent, then the child can go behind the parent when the parent is shown.

      X11 exhibits the problem. Windows does not exhibit the problem (not tested elsewhere).

      Attached is a tar that will reproduce the problem.

      The code in the attached file is how I narrowed down the problem, but my actual situation involves more complex reasons that the parent window is reparented and setParent() unavoidably hides the child.

      Also I tested Qt4.8 does not have this problem on X11. So it is both a regression and an inconsistency between platforms in current versions.

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        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-34767 Modeless window on Mac behind its parent 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-70756 QDialog is not top-level

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-46626 QFileDialog hidden behind main window

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-46627 QFileDialog invisible (yet present)

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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-39277 XCB on Unity using Gtk 2 theme plugin: Dialog boxes behind main window when parent widget is not top level

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

          Activity

            People

              qt.team.graphics.and.multimedia Qt Graphics Team
              ddurham Davy Durham
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              Dates

                Created:
                Updated:
                Resolved: