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param10.txt
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1996-04-08
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830b
From: VisualWare
Date: Saturday, August 26, 1995 10:03 AM
To: Visual Basic Examples and Sample Source
Subject: VisualWare Parameter Custom VBX Control
A major ommission in Visual Basic is the inability to pass parameters
to forms. Generally this is handled by using global variables or
assigning values to controls on a form. Neither is very satisfactory
since you have the problem of synchonization: How do you load two
forms of the same type at the same time?
In addition you do not get event notification using global
variables. In VB programming you want the form to be able to get
data AND to know when data is available.
The VisualWare Parameter control allows you exchange data with
a form and to notify a form of events. In effect it gives you the
ability to call a function in a form.