[RESOLVED] When declairing an optional argument

[frozen]

Is there a way to tell if the arguemnt was passed or not?

Sub LoadConfiguration(ByVal ConfigurationFile As String, _
 ByRef ConfigurationCollection As Collection, _
 Optional ByRef KeyCollection As Collection)
 If KeyCollection Then: MsgBox "twas passed" '?
End Sub

[vbcode1980]

Can't you check if KeyCollection <> empty?

(Don't have VB 6 here so can't test if that works.. )

[Hack]

Can't you check if KeyCollection <> empty?

(Don't have VB 6 here so can't test if that works.. )

Exactly right.

Just do a quick If to see if that value has anything in it.

[oh1mie]

Sub LoadConfiguration(ByVal ConfigurationFile As String, _
 ByRef ConfigurationCollection As Collection, _
 Optional ByRef KeyCollection As Collection = Nothing)
 
    If KeyCollection Is Nothing Then
       MsgBox "not passed"
    Else
       MsgBox "twas passed"
    End If
 
End Sub

[frozen]

You must spread some Reputation around before giving it to Hack again.

Thanks guys.

[Frans C]

Empty works only for Variants.
You have to check for Nothing.

If Not KeyCollection Is Nothing Then: MsgBox "It was passed"

EDIT: oh1mie, you have beaten me