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ID: 301
Viewed: 2428
Added: Aug 19, 2002
Version:
Snippet uploaded by: snippet
Written By: Unknown
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Example Usage of Observer Pattern.

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<!---Declaration--->
'
' Declarations Section of a form:
'
Option Explicit
'
Private m_oObservers(5) As CConcreteObserver
Private m_oSubjectObserver As CSubjectObserver
Private m_oSubject As CConcreteSubject
'

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<!---Code--->
Private Sub cmdUpdate_Click()
m_oSubject.State = txtState.Text
End Sub
'
Private Sub Form_Load()
'
Dim iLoop As Integer
'
Set m_oSubjectObserver = New cSubjectObserver
Set m_oSubject = New CConcreteSubject
'
m_oSubject.init m_oSubjectObserver
'
' Create 5 Observer objects
'
For iLoop = 1 To 5
Set m_oObservers(iLoop) = New CConcreteObserver
m_oObservers(iLoop).init m_oSubjectObserver, iLoop
Next iLoop
'
End Sub
;


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