[Qt-interest] Deleting the treewidget item

[Ferenc Stelcz]

Srdjan Todorovic wrote:

> 
> I've been a bit wary of deleting items from a tree widget. What
> happens if you have 10 children, and childcount == 9?
> If you have removed the first 9 children, won't item->child(9) be out of bounds?
> 
>> //This piece tries to remove *item*
>> QTreeWidgetItem *rootItem = item->parent(); //We get the parent of item
>> rootItem->removeChild(item); //Then remove item
> 
> So I tend to do something like this:
> 
>   QList<QTreeWidgetItem *> children = item->takeChildren();
>   for (int i = 0; i < children.count(); ++i)
>   {
>     QTreeWidgetItem *tmp = children.at(i);
>     delete tmp;
>     tmp = 0;
>   }
> 
> Which means these items are under my control now and I should be able
> to delete them safely (assuming the pointers are not used somewhere
> else).
> 
> Srdjan

Yes, that's why I have replied to myself with the take*() methods.
Haven't got enough coffee in the morning... :)

Thank you!

--
Ferenc Stelcz
Junior Software Engineer

Banyan Technologies LLC.


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