design help with QList in an interface

[GuusDavidson]

Hi,

I am new to using QT and am in need of some guidence.

I want to create an interface that returns a list of pointers to objects, and then the classes that implement this interface should be able to both set and get the objects in the list.

Where I am getting confused is that I want a general interface that allows me to be able to get any items from any of the derived classes.
I don't understand how I should be handling converting the specialized datatypes like

QList<newsChannelItem*> items;

QList<newsChannelItem*> items;

To copy to clipboard, switch view to plain text mode 

back via the interface

QList<QObject*> getItems();

QList<QObject*> getItems();

To copy to clipboard, switch view to plain text mode 

class ChannelInterface
{    
public:
  virtual QList<QObject*> getItems() = 0;
}

class ChannelInterface
{    
public:
  virtual QList<QObject*> getItems() = 0;
}

To copy to clipboard, switch view to plain text mode 

classes that then implement this interface

class storeChannel : public QObject, public ChannelInterface
{
    QList<storeChannelItem*> items;
public:
    QList<QObject*> getItems();    // I want to be able to return a list of storeChannelItem's
 
 
class newsChannel : public QObject, public ChannelInterface
{
    QList<newsChannelItem*> items;
public:
    QList<QObject*> getItems();    // I want to be able to return a list of newsChannelItem's

class storeChannel : public QObject, public ChannelInterface
{
    QList<storeChannelItem*> items;
public:
    QList<QObject*> getItems();    // I want to be able to return a list of storeChannelItem's
    

class newsChannel : public QObject, public ChannelInterface
{
    QList<newsChannelItem*> items;
public:
    QList<QObject*> getItems();    // I want to be able to return a list of newsChannelItem's

To copy to clipboard, switch view to plain text mode 

I appreciate any help on this, as I am pretty stuck.

thanks in advance

Guus Davidson