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8.6

Using custom events with classes

Asked by IThema in Visual Basic Programming, Delphi Components, VB Objects

Hi,

Say an object of class x contains zero or more instances of class y (a sentence object containing several or none word objects for example) and a Click()-Event could occur in class y. How can I catch those custom events in class x, considering that I don't know the number of y's contained by x. Is it possible to do something similar like a control array?

For example:

Class y looks as follows:
Private m_strWord as string

Public Event Click()

Public Property Get Word() As String
'...
End Property

Public Property Let Word(Value As String)
'...
End Property

Public Sub Copy()
'...
End Sub

etcetc...

Class x looks as follows:

'...How to declare a number of y objects for which to catch events?
'...Private WithEvents m_objY As y only works for one object
'...Declaring an array of y's cannot be declared using the keyword WithEvents
'...Can't I create something like a control array?

'...Here I would like to respond to y's Click()-event.

Public Sub Copy()
End Sub

I know I could use some kind of a CallBack-function, but I prefer using Events instead, simply because I don't want y to be dependant upon the implementation of the module/class it is used in.

Cheers and thanks in advance!

Luc

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20091111-EE-VQP-89

Using custom events with classes

Asked by IThema in Visual Basic Programming, Delphi Components, VB Objects

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