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Hi Alex,<br>
<br>
I have the same problem but regrettably no solution. When I switch
tabs, tabs to the left are shown first then the active tab is drawn
twice; firstly the image shifted to the top left and then finally in
the correct position. I don't see garbage, just the hidden tabs.<br>
<br>
Others have also reported this<a
href="https://bugreports.qt.io/browse/QTBUG-21077">
https://bugreports.qt.io/browse/QTBUG-21077</a><br>
<br>
Best regards<br>
<br>
John.<br>
<br>
<div class="moz-cite-prefix">On 23/01/2015 03:14, Alex Malyushytsky
wrote:<br>
</div>
<blockquote
cite="mid:CADTNJpEbkOK6xurBF3duag33x=jkUYj5s6jbRocFExRCkr=R3g@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>QGLWidget produces the same behavior. It looks like
QMdiArea approach to handle subwindows even in tabbed view
mode requires double buffering to work properly.</div>
<div>Otherwise all widgets with transparency ( using Aero )
display garbage when become active.</div>
<div>At this point I could not find any solution to fix it other
than r<span
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">emoving
Qt::PaintOnScreen attribute.</span></div>
<div><span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px"><br>
</span></div>
<div><span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">Any suggestions?</span></div>
<div><span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">Best regards,</span></div>
<div><span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px"> Alex</span></div>
<div><span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px"><br>
</span></div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Jan 21, 2015 at 12:51 PM, Alex
Malyushytsky <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:malyushytsky@gmail.com" target="_blank">malyushytsky@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><span
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">I have
multiple QVtkWidgets in QMDiArea in a tabbed view.</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">I found that
switching tabs with such QVtkWidgets shows garbage for
a noticeable time if Aero scheme on Windows is set.</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">Removing
Qt::PaintOnScreen attribute from QVtkWidget fixes the
problem.</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">But even
though I do not see any side effects that does not mean
they do not exist.</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">At the same
time Qt 4.8.6 states that this flag is only supported on
X11.</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<br style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">SO questions
are:</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">- what can go
wrong with having double buffering of QVtkWidget?</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">- Is there
any other way to remove flickering during resize?</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<br style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">Best regards,</span><br
style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px">
<span style="color:rgb(0,0,0);font-family:"Helvetica
Neue","Segoe
UI",Helvetica,Arial,"Lucida
Grande",sans-serif;font-size:13.14px"> Alex</span></div>
</blockquote>
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