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  1. Qt
  2. QTBUG-35282

Child widgets do not receive paint events under certain cirumstances

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P1: Critical P1: Critical
    • 5.3.0 Beta1
    • 5.1.1, 5.2.0 RC1, 5.2.0, 5.2.1
    • Widgets: Widgets and Dialogs
    • None
    • Win7/8 VS2012 64bit Qt5 git stable

      When a child widget with WA_StaticContents and WA_OpaquePaintEvent set is spontaneously exposed due to a parent resize, the child will not receive a paint event, and the backing store for the child area will remain black.

      The attached minimal example demonstrates the issue.

      I believe the solution is due to a subtle logic error introduced into the new widget backing store code in Qt5. I will submit a change set shortly.

        1. main.cpp
          1 kB
        2. badreveal.PNG
          badreveal.PNG
          3 kB
        For Gerrit Dashboard: QTBUG-35282
        # Subject Branch Project Status CR V
        72939,7 Fix issue where revealed widget children do not receive paint event. stable qt/qtbase Status: MERGED +2 0
        77689,2 Fix issue where revealed widget children do not receive paint event. dev qt/qtbase Status: ABANDONED -1 0

            jolind Jorgen Lind
            sccolbert Chris Colbert
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              Created:
              Updated:
              Resolved:

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