The macro graphstruct.C in …root\tutorials\graphs
generates errors having to do with TGraphStruct being unknown.

Do I need to load any additional library first? I have built ROOT 5.26 on Windows using the graphviz package installed from its installer and the compilation seemed to go ok. In root\bin I have a library named libGviz3d.dll which I thought might be relevant, but it loads ok and TGraphStruct is still unknown.



Olivier will process your mail when CERN will reopen next week.


Sorry for the delay.
This class (TGraphStruct) needs to have the graphivz package installed.
Have a look at $ROOTSYS/graf2d/gviz/README
It works fine for me . Let me know.