[Qt-interest] Memory Management in Qt

[Ramesh]

Thanks Rohan,

What about the Qlistview and QStandardItemModel object?
Should I delete them in the destructor of widget? Or any other alternative is 
there for it also?


-----Original Message-----
From: Rohan McGovern [mailto:rohan.mcgovern at nokia.com]
Sent: Tuesday, October 26, 2010 11:45 AM
To: ext Ramesh
Cc: qt-interest at trolltech.com; QtS60-feedback at trolltech.com
Subject: Re: [Qt-interest] Memory Management in Qt

Ramesh said:
> HI all,
> I have small doubt about Qt memory management,
>
> Lets take an example of Listview, in listview we add each item by allocating 
> memory dynamically. So in this case do we need to delete all the "new"ed 
> items manually..
>
> Eg:
>
> Qlistview *list = new Qlistview;
> QStandardItemModel  *mModel = new QStandardItemModel();
> list ->setModel(mModel);
>
> for(int I =0;i<10;i++)
> {
> QsandardItem *item = new QsandardItem("Hi");
> mModel->appendRow(item);
> }
>
> In this example, item should be deleted manually?

No - the model takes ownership of the item, it'll be deleted when the
model is deleted.

There is an exception if you use the take* functions, though - these
will cause the model to release ownership of items.
-- 
Rohan McGovern
QA Engineer
Qt Development Frameworks, Nokia


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