[Qt-interest] QList and QUrl problem

[ice stone]

Thanks. As you and another member mentioned, this is probably a detach() issue. I'm using QT 4.6.
 
Yan

--- On Fri, 3/26/10, Thiago Macieira <thiago at kde.org> wrote:


From: Thiago Macieira <thiago at kde.org>
Subject: Re: [Qt-interest] QList and QUrl problem
To: qt-interest at trolltech.com
Date: Friday, March 26, 2010, 3:36 AM


Em Sexta-feira 26. Março 2010, às 03.51.24, ice stone escreveu:
> I am trying to figure out a problem involving QList<QUrl>. Here is my code:
>  
>  QList<QUrl> test;
>  QUrl url;
>  url.setUrl("1");
>  test.append(url);
>  qDebug()<<test[0];
>  url.setUrl("2");
>  test.append(url);
>  qDebug()<<test[0];
>  url.setUrl("3");
>  test.append(url);
>  qDebug()<<test[0] << test[1] << test[2];
> 
>  
> And the output is:
>  QUrl( "1" ) 
>  QUrl( "2" ) 
>  QUrl( "3" )   QUrl( "3" )   QUrl( "3" )
>  
> My understanding of QList is that it allocates a memory in heap for every
> inserted item and delete them when they are removed from the list. But the
> output here seems to point to a single QUrl object for all three items.
> Anyone can help me to solve this puzzle? Thanks a lot. 

It looks wrong... probably a missing detach in QUrl::setUrl.

Which version of Qt is that?

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358

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