Chapter 11 421
Optimizing Agilent VEE Programs
Using Dynamic Link Libraries
Run the program and notice that the second trace is one greater than the first
trace at all points on the waveform.
Another key point to notice in the program is the method used for making it
portable to all VEE platforms. The HP-UX platforms use shared libraries
indicated by the filename extension
*.sl. Windows 95, Windows 98,
Windows 2000, and Windows NT 4.0 use a Microsoft 32-bit compiler.
These DLLs are all indicated using a
*.dll extension.
The
UserObject called Shared Library Name identifies the operating
system being used, and then transmits the correct library name to the
Import Library object, as shown in Figure 11-9.
Figure 11-9. The Shared Library Name UserObject
totSize The totSize object (in the Math & Functions box) is
used to determine the size of the waveform, which is output
to the
arraySize input pin on Call myFunc.
XY Trace The
XY Trace object displays both the original and the
new waveforms
Formula The
Call object output pin labeled Ret Value holds the
size of the returned array, so that expression
B[0:A-1] in
the
Formula object correctly specifies this array to the
display object.
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