Query about QHash , QList

**aamer4yu** · 14th December 2006, 06:41

I want to know if QHash, QList makes a copy of the items inserted into them or what ??
Suppose I have a function CreateList()

Qt Code:

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class MyNode
{
      int id;
      QScene *scene;   // pointer to a scene or any other class based on id.
public : 
     MyNode(QScene *s)
     {   scene = s;   
          id = 0; // or some unique value
     }
};
QList<MyNode> list;
void CreateList()
{
        MyNode node(this->pScene);  
        list.append(node);   
}

class MyNode
{
      int id;
      QScene *scene;   // pointer to a scene or any other class based on id.
public : 
     MyNode(QScene *s)
     {   scene = s;   
          id = 0; // or some unique value
     }
};
QList<MyNode> list;
void CreateList()
{
        MyNode node(this->pScene);  
        list.append(node);   
}

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Here I have added just one item, though multiple items may be insterted in the list. I want to know when CreateList function is exited, wll list still have valid copy of node ??

also what if i have pointers instead of objects..
like

Qt Code:

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QList<MyNode*> list;
void CreateList()
{
        MyNode *node = new MyNode(this->pScene);  // node contains some 
        list.append(node);   
}

QList<MyNode*> list;
void CreateList()
{
        MyNode *node = new MyNode(this->pScene);  // node contains some 
        list.append(node);   
}

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in this case how do i delete the actual nodes created. Does list.clear() call the destructor too ?? if not what is the safe way of freeing the memory when a list of pointers is cleared ?

I think I know the answers, but still a little confused,so asking in the forum, (i know i sound a little stupid here

)
Thx in advance