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Refer to the following sections for information about each Measurement 
Studio Visual C++ class library.

ActiveX controls are specialized COM servers that implement a specific set 
of interfaces. The Measurement Studio Visual C++ button, graph, knob, 
numeric edit, slide, and 3D graph are ActiveX controls. Measurement 
Studio includes classes that provide native C++ interfaces to the ActiveX 
controls. For example, the 

CNiGraph

 class provides an interface to the 

CWGraph ActiveX graph control.

The Measurement Studio classes that provide interfaces to the 
Measurement Studio ActiveX controls simplify using ActiveX controls in 
Visual C++ interfaces and programs. The features that simplify this process 
include overloaded functions, the ability to call the control from any thread, 
and automatic data type translations.

Use the Measurement Studio ActiveX 3D graph control, as shown in 
Figure 3-1, to plot three-dimensional data. The 3D graph is included only 
in the Measurement Studio Enterprise and Professional packages.

Figure 3-1.  ActiveX 3D Graph Control

With the Measurement Studio ActiveX 3D graph control and the classes 
that interface with the control, you can perform the following operations: