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  1. Qt
  2. QTBUG-27004

QWizard: Black titlebar if Aero disabled after all wizards destroyed

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Not Evaluated Not Evaluated
    • 4.8.x, 5.0.0 Beta 2
    • 4.8.2, 5.0.0 Beta 1
    • Widgets: Widgets and Dialogs
    • None
    • Microsoft Windows 7 Ultimate 64-bit
    • Qt4.8: d8cc750c58d6e710c821868a2456c2b0a8b0dbbc, Qt5.0: 952ea029f40aaff9de0101fc165907ef8693e4aa

      If a QWizard is shown when Aero is enabled, the current visual style is cached in a static member of QVistaHelper. The cached state is updated by QVistaHelper when it receives WM_THEMECHANGED or WM_DWMCOMPOSITIONCHANGED events from Windows.

      If all QWizard instances are destroyed, there are no instances of QVistaHelper to receive these notifications and update the cache. If Aero is now disabled, the cached current visual style in QVistaHelper isn't updated. If a wizard is now created and shown, a large black rectangle is shown in the titlebar.

        1. Wizard Vista State Bug.png
          Wizard Vista State Bug.png
          7 kB
        2. WizardVistaStateBug.cpp
          2 kB
        For Gerrit Dashboard: QTBUG-27004
        # Subject Branch Project Status CR V
        34062,1 QWizard/Win: Fix incorrect cached state after all wizards destroyed master qt/qtbase Status: MERGED +2 0
        34103,1 QWizard/Win: Fix incorrect cached state after all wizards destroyed 4.8 qt/qt Status: MERGED +2 0

            Unassigned Unassigned
            net147 Jonathan Liu
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              Created:
              Updated:
              Resolved:

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