QListWidget elements sorting using drag&drop

I have QListWidget. I added elements in there using

Code:

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new QListWidgetItem(text, qlwElements);

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. Later I will use icons for elements, so I plan to use another code

Code:

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QListWidgetItem *newItem = new QListWidgetItem(text, qlwElements);
newItem->setIcon(iconPath);

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Question: how to sort elements using drug and drop functionality and after that add some more elements?
I want to add three elements - 1, 2, 3. Then drag first one (1) to the end, so they will be 2, 3, 1. And then I want to add element 4. So after adding fourth element I want 2, 3, 1, 4.
Now I have 1,2,3,4 after adding fourth element.
Is there some functionality to "auto sort elements" after drop? Or where, when and in what method I can get info about where user drop element?