[Doxygen-develop] Dot question

[Johan E. <joh...@ua...>]

Hi,
    if I understand the Dot graphs correctly and the possible 
configuration file options, there is no way today to distinguish the 
"uses" relation aggregated vs reference??
If this is true, how difficult would it be to make a Doxygen patch to 
support it? I've looked in the Doxygen sources but I get lost in some of 
the help classes (UsesClassDef, BaseClassDef, BaseInfo) vs the main 
classes (ClassDef, MemberDef) that Doxygen uses and the collaboration 
with the Dot classes. I think the functions findUsedClassesForClass(), 
addUsedClass(), buildGraph() should be changed some way e.g. by handling 
a new member variable(aggregated/reference). But in which class should 
such info go?
I've also noticed the member function determineImplUsageRelation() in 
class ClassDef, which by the sound of it, maybe the intention here is 
something similar.

If this is a feature for doxygen main stream, what would be the best way 
to patch doxygen? Some simple guidelines would be enough for the time 
being........

Thank you,
           Johan

PS I know there probably would be a problem, if a class both aggregates 
and references the same class, but for simplicity I am currently 
pretending that problem doesn't exist. DS