User`s guide

76 VEE User’s Guide
2 Agilent VEE Programming Techniques Chapter
General Techniques
Inside the Main VEE program, you can create logical groups
of objects, called UserObjects. A UserObject object (called
UserObject hereafter) is created by placing a logical group of
objects in a UserObject window. Inside the UserObject
window, you connect inputs and outputs in the same way as
the main program. The UserObject itself is connected to
other objects in the main program with inputs and outputs,
like any other object.
The idea in developing a UserObject is to create a unique
context that performs a useful purpose within the main
program. Besides conserving space in the main work area,
you can make the program more understandable by giving it
structure.
A VEE program can contain many UserObjects nested within
the Main program. Each UserObject has an icon view which
resides in the Main window. To associate the icon views of
the UserObjects in the main program with their associated
UserObject windows, name UserObjects in their edit
windows, which also names them in their associated icon
view. For example, if you name a UserObject AddNoise, its
icon window in the Main program and the title bar on the
UserObject will both read AddNoise. The following exercise
teaches you how to create a UserObject.
Lab 2-1: Creating a UserObject
There are a couple of ways to create a UserObject in a VEE
program:
• Select Device ⇒ UserObject from the menu bar to bring up
an empty UserObject icon in the Main window, and add
objects to it. If you double-click the UserObject icon, it is
displayed in open view, as shown in
Figure 40.
• Select objects within a program and then create a
UserObject from them, by selecting the objects and
clicking Edit
⇒ Create UserObject.