Since the CNiGraph Class is just a wrapper for the CWGraph ActiveX control you can get a good description of the Value Pairs object for the graph from the ComponentWorks Reference help as well. In the case of the ComponentWorks++ Online help you will want to look under the explanation of the CNiAxes and CNiValuePairs classes.
The Value Pairs of a graph are accessed as a collection, and if you are not familiar with collections here is a link to a page that describes their use (the page explains them in terms of VB but the same info applies in VC++):
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/aba9bbcaacc18e57862568650060d2ca?OpenDocument
Here is a quick snippet of what you would could do in VC++ for example:
CNiGraph m_Graph
m_Graph.Axes.Item
(0).ValuePairs.Add();
m_Graph.Axes.Item(0).ValuePairs.Item(0).Name = "Sunday";
m_Graph.Axes.Item(0).ValuePairs.Item(0).Value = 1;
m_Graph.Axes.Item(0).ValuePairs.Add();
m_Graph.Axes.Item(0).ValuePairs.Item(1).Name = "Monday";
m_Graph.Axes.Item(0).ValuePairs.Item(1).Value = 2;
Jason F.
Applications Engineer
National Instruments
www.ni.com/ask
