Creating an SoCube, SoCone... From a SoNode..

[Tomás Aguado Gómez <tomas.aguado@xxxxxxxxxxxxxx>]

Hello:

   I am developing an interface in QT to create 3D scenes; I thought 
(and it's almos vital for me) I could create a SoCube for example from 
an SoNode. I explain:
            the fact is that I have a std Map of C++ And every Item of 
a List (QlistViewItem as I am making It in QT) is relationed with an 
SoNode, so, when I insert an item in the Qlist it must have a parent 
especified by the user(SoSeparator,Sogroup..), I watch in the map for 
the SoNode relating to this "parent" and I want to add the child to this 
SoNode, but as it is not an SoSeparator, I can't access to the 
"addChild" function, Is there anyway to do this creating a SoNode 
variable, specifying its type (SoCube, SoSeparator...) and the access 
its function
for example:
          [........]
        SoNode *Cube=new SoNode;
        Cube->typeId(SoCube);--------------->This Is the function I am 
watching for!!!
        Cube->width=3.0;
          [.......]

Thanks!