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How do you like the new design?
It's cool, great job
[tally: 70%] 70%
It's okay
[tally: 20%] 20%
Its OK but I liked the old layout better
[tally: 0%] 0%
Please bring the old one back
[tally: 10%] 10%

votes: 10

ID: 297
Viewed: 2933
Added: Sep 10, 2002
Version: 5+
Snippet uploaded by: snippet
Written By: Unknown
Demo: Sorry, no demo



User Rated at: 0 Stars
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This class is a simple wrapper around VB's Collection object that exposes and "Exists" method.

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<!---Declaration--->
Option Explicit

'local variable to hold collection
Private mCol As Collection

Public Function Exists(Key) As Boolean
Dim v As Variant

On Local Error GoTo NoItem
If IsObject(mCol(Key)) Then
Set v = mCol(Key)
Set v = Nothing
Else
v = mCol(Key)
End If

Exists = True
Exit Function
NoItem:
Exists = False
Exit Function
End Function

Highlight All
<!---Code--->
Public Sub Clear()
Set mCol = New Collection
End Sub

Public Sub Add(Item, Optional Key, Optional Before, Optional After)
If IsMissing(Key) Then
mCol.Add Item
Else
If IsMissing(Before) Then
mCol.Add Item, Key
Else
If IsMissing(After) Then
mCol.Add Item, Key, Before
Else
mCol.Add Item, Key, Before, After
End If
End If
End If
End Sub

Public Property Get Item(vntIndexKey As Variant) As Variant
If IsObject(mCol(vntIndexKey)) Then
Set Item = mCol(vntIndexKey)
Else
Item = mCol(vntIndexKey)
End If
End Property

Public Property Get Count() As Long
Count = mCol.Count
End Property

Public Sub Remove(vntIndexKey As Variant)
mCol.Remove vntIndexKey
End Sub

Public Property Get NewEnum() As IUnknown
Set NewEnum = mCol.[_NewEnum]
End Property

Private Sub Class_Initialize()
'creates the collection when this class is created
Set mCol = New Collection
End Sub

Private Sub Class_Terminate()
'destroys collection when this class is terminated
Set mCol = Nothing
End Sub;


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