[PyKDE] Class inheritance

[Sato, Kristine]

Hello,

I am using SIP to wrap some of my own C++ classes. 

Given this class hierarchy,

class ObBase
{
	ObBase *GetParent();
}

case ObLevel1 : ObBase
{
}


case ObLevel2 : ObLevel1
{
}


When ObBase::GetParent() gets wrapped, it eventually calls
	return sipMapCppToSelf(res,sipClass_ObBase);
However, the parent may in fact be an ObLevel1 or ObLevel2. How can I get
SIP (or do I just need to write the code myself) to return the correct
object type?

Thank you,
Kristine