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Shall try if I find the time. <br>
<br>
Cheers, Heinz<br>
<br>
Phil Thompson wrote:
<blockquote cite="mid:200710241456.46361.phil@riverbankcomputing.co.uk"
type="cite">
<pre wrap="">On Wednesday 24 October 2007, Heinz A. Preisig wrote:
</pre>
<blockquote type="cite">
<pre wrap=""> Hi,
I found a way around it by trial and error....
It turned out to be the operation len(<list>) , where the <list> was a
list of graphics items caused the problem when used in mouseReleaseEvent .
In this case it was possible to change the code achieving the same result
but not using the len() method.
Not sure if this helps in finding the problem.
Cheers, Heinz
Heinz A. Preisig wrote:
Hi,
I have been expanding my code with new features after which I experience
an error
NotImplementedError: QGraphicsItem.boundingRect() is abstract and must be
overridden
when using the rubber band. The procedure has been working before, but
obviously I disturbed the devil.
Any suggestions on what to change or do to get rid of the problem
Cheers, Heinz
</pre>
</blockquote>
<pre wrap=""><!---->
Can you produce a test case that demonstrates the problem?
Phil
</pre>
</blockquote>
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<td style="width: 50%; vertical-align: top;"><span
style="font-weight: bold;">Heinz A Preisig</span><br>
Professor of Process Systems Engineering</td>
<td style="width: 50px; vertical-align: top;"><span style=""
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Øvre Bakklandet 62 B, 7013 Trondheim, Norway<br>
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<td style="vertical-align: top;"><span style="font-style: italic;">Department
of Chemical Engineering</span><br>
<div style="text-align: left;"><span
style="font-weight: bold; font-style: italic;"></span><span
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University of Science and
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<v:stroke joinstyle="miter"/>
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<v:f eqn="if lineDrawn pixelLineWidth 0"/>
<v:f eqn="sum @0 1 0"/>
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<v:f eqn="prod @2 1 2"/>
<v:f eqn="prod @3 21600 pixelWidth"/>
<v:f eqn="prod @3 21600 pixelHeight"/>
<v:f eqn="sum @0 0 1"/>
<v:f eqn="prod @6 1 2"/>
<v:f eqn="prod @7 21600 pixelWidth"/>
<v:f eqn="sum @8 21600 0"/>
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1334<br>
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