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  1. Qt
  2. QTBUG-27411

Application hangs up when keyboard layout is changed in the context of QNetworkAccessManager::authenticationRequired

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      Description

      Description

      This sample application sends GET-request and web-server requires authentication. GUI dialog is created in slot connected to QNetworkAccessManager::authenticationRequired. If user changes keyboard layout (by shortcut or mouse) application will hang up. There is no any freezing if keyboard layout is changed outside QNetworkAccessManager::authenticationRequired context.

      This is a Windows-only issue.

      How to reproduce

      1) Enable advanced text services by checking "Extend support of advanced text services to all programs" in a Windows settings dialog "Text Services and Input Languages".
      2) In an attached sample application change URL from the 'localhost' to any web-server which requires an authentication.
      3) Compile & run.
      4) Switch keyboard layout while in a dialog.

      Workaround

      1) Disable Windows IME (input method editor) for this application by uncommenting this line in main.cpp:

       // ImmDisableIME(-1); 

      2) Check "Turn of advanced text services" in a Windows settings dialog "Text Services and Input Languages". This solution does not work on some Windows XP installations.

      Additional

      I guess this is a similar issue: https://bugreports.qt-project.org/browse/QTCREATORBUG-418

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              Assignee:
              shkearns Shane Kearns
              Reporter:
              arsenicum Arseniy Protchenko
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                Created:
                Updated:
                Resolved:

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