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Issue 3.4


Associating a Window to an Object

An Introduction to Weak References

Issue: 3.4 (March/April 2005)
Author: Charles Yeomans
Author Bio: Charles Yeomans is a software developer in Lexington, Kentucky.
Article Description: No description available.
Article Length (in bytes): 4,947
Starting Page Number: 33
Article Number: 3414
Related Link(s): None

Excerpt of article text...

Consider the following example. You have a Mailbox class with a method ShowMessages that displays a window containing the list of messages. As long as this window is open, you would like the result of calling ShowMessages on a Mailbox to display the same window. At first glance, this is simple enough; the object holds a reference to the window and returns it when ShowMessages is called. The code might look something like the following.

Sub ShowMessages()

If me.pMsgWindow Is Nil then

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