General destroy question

[qlands]

Hi,

I have a class that looks like this:

struct moduleFieldDef
{
  QString code;
  QString description;
  QVariant value;
  QVariant previousValue; 
  QAbstractItemDelegate* delegate;
};
 
typedef moduleFieldDef TmoduleFieldDef;
 
class fieldInColModel :  public QAbstractTableModel
{
    Q_OBJECT
public:
    fieldInColModel(QObject *parent=0);
    ~fieldInColModel();
 
private:
    QList<TmoduleFieldDef> m_fields;
};

struct moduleFieldDef
{
  QString code;
  QString description;
  QVariant value;
  QVariant previousValue; 
  QAbstractItemDelegate* delegate;
};

typedef moduleFieldDef TmoduleFieldDef;

class fieldInColModel :  public QAbstractTableModel
{
    Q_OBJECT
public:
    fieldInColModel(QObject *parent=0);
    ~fieldInColModel();

private:
    QList<TmoduleFieldDef> m_fields;
};

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In the implementation m_fields gets filled with a series of fields some of them with a valid * to a delegate. Both the class and the * to delegates share the same parent (a QDialog).

Now, when the class gets destroyed what happens to the list m_fields, the fields it contains and the valid * to a delegates? Do the valid * to a delegates gets destroyed too? or they will get destroy after (when its parent gets destroyed)?

Thanks,
Carlos.

[Rachol]

If you ask if the delegates get destroyed,when m_fields is destroyed, the answer is "no".

[stampede]

As I've posted in your other thread, someday you will regret such thing:

struct moduleFieldDef
{
...
  QAbstractItemDelegate* delegate;
};

struct moduleFieldDef
{
...
  QAbstractItemDelegate* delegate;
};

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What if you pass this pointer to a view and it gets deleted ? You are left with dangling pointer. I think its better safe than sorry :

struct moduleFieldDef
{
...
  QPointer<QAbstractItemDelegate> delegate;
};

struct moduleFieldDef
{
...
  QPointer<QAbstractItemDelegate> delegate;
};

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QPointer