Cast problem

[yellowmat]

Hi,

I have a base class called CItem and 3 derived class called respectively CItemSound, CItemImage and CItemColor.

My application uses a QValueList<CItem>objList member to manipulate all my objets (of type CItemSound, CItemImage and CItemColor) regardless to their type.

I declare the objList member as follow :

QValueList<CItem>objList;

QValueList<CItem>objList;

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and I fill it as follow :

CItemSound s1;
	s1.setItemName("Sound 1 of list 1");
	CItemImage i1;
	i1.setItemName("Image 1 of list 1");
	CItemColor c1;
	c1.setItemName("Color 1 of list 1");
	list1.append(s1);
	list1.append(i1);
	list1.append(c1);

CItemSound s1;
	s1.setItemName("Sound 1 of list 1");
	CItemImage i1;
	i1.setItemName("Image 1 of list 1");
	CItemColor c1;
	c1.setItemName("Color 1 of list 1");
	list1.append(s1);
	list1.append(i1);
	list1.append(c1);

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Let me explain my problem now :
in a function I need to do something like this :

CItemSound s = objList[0];

CItemSound s = objList[0];

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... it fails ... how is it possible to do such a cast ?

Thanks in advance