If you want to preview OpenGL graphs then you have to switch on the smooth option button on the left panel in the previewer, see the following image:

How can I switch on/off this button programmatically from VC++ 6.0, I don't see any possibility, not in the CPrinter class not anywhere else, to do this in the ActiveX wrapper classes for VC++ 6.0, could this be implemented in one of the next releases ??
Thx in advance,
Michael Kuelshammer
Germany