Excel VBA ComboBox Identification - vba

Question

I have 4+ ComboBoxes on a user form. When they fire, they fire the same event. What I am trying to do is find out which ComboBox triggered the event. The ComboBoxes are created depending on how many components there are. The code generating the ComboBoxes is shown below:
For j = 0 To UBound(ComponentList) - 1
'Set Label
num = j + 1
Set control = UserForm1.Controls.Add("Forms.Label.1", "ComponentLabel" & CStr(num) & ":", True)
With control
.Caption = "Component " & CStr(num)
.Left = 30
.Top = Height
.Height = 20
.Width = 100
.Visible = True
End With
'set ComboBox
Set combo = UserForm1.Controls.Add("Forms.ComboBox.1", "Component" & num & ":", True)
With combo
.List = ComponentList()
.Left = 150
.Top = Height
.Height = 20
.Width = 50
.Visible = True
Set cButton = New clsButton
Set cButton.combobox = combo
coll.Add cButton
End With
Height = Height + 30
Next j
This works well and I can get the value the user selected, BUT I can not find which ComboBox has been used. This code below is the event that it fires (clsButton):
Public WithEvents btn As MSForms.CommandButton
Public WithEvents combobox As MSForms.combobox
Private combolist() As String
Private Sub btn_Click()
If btn.Caption = "Cancel" Then
MsgBox "Cancel"
Unload UserForm1
Variables.ComponentSelectionError = False
ElseIf btn.Caption = "Enter" Then
MsgBox "enter"
Unload UserForm1
Variables.ComponentSelectionError = True
End If
End Sub
Private Sub combobox_Click()
MsgBox combobox.Value
End Sub
This bit of code above was kindly worked on by Doug Glancy to get the events working with the code generated ComboBoxes.
How do I get the ComboBox that triggered the event? i.e. the name or some other form of identification.

Answer 1

I have managed to finally answer my own question after searching over 500 webpages (took a long time)
this is what i used and it works and fires when the certain comboboxes are clicked:
Private Sub combobox_Click()
MsgBox combobox.Value
If combobox = UserForm1.Controls("Component0") Then
MsgBox "Success1"
End If
If combobox = UserForm1.Controls("Component1") Then
MsgBox "Success2"
End If
End Sub
hopefully this can be used for other people who need it.

Answer 2

Within the class .Name will not appear in the intellisense list for the combobox as MSForms.ComboBox does not actually have a name property itself (take a look at it in the F2 object browser), rather that property is provided by the Control base class:
Private Sub combobox_Click()
MsgBox combobox.Value
MsgBox combobox.Name '// no hint but still works
'//cast to a Control to get the formal control interface with .Name
Dim ctrl As Control: Set ctrl = combobox
MsgBox ctrl.Name
End Sub

Answer 3

Maybe reference back to btn.Combobox again? Similar to how you assigned the combobox to the button in the first place, but then in reverse:
set combobox = btn.Combobox

Answer 4

Is there a reason you don't just add a property to your custom class and set that property when you register in the Collection?
For j = 0 To UBound(ComponentList) - 1
'Set Label
num = j + 1
Set control = UserForm1.Controls.Add("Forms.Label.1", "ComponentLabel" & CStr(num) & ":", True)
With control
.Caption = "Component " & CStr(num)
.Left = 30
.Top = Height
.Height = 20
.Width = 100
.Visible = True
End With
'set ComboBox
Set combo = UserForm1.Controls.Add("Forms.ComboBox.1", "Component" & num & ":", True)
With combo
.List = ComponentList()
.Left = 150
.Top = Height
.Height = 20
.Width = 50
.Visible = True
Set cButton = New clsButton
'*******EDIT********
with cButton
.combobox = combo
.Indx = j
end With 'cButton
'*******************
coll.Add cButton
End With
Height = Height + 30
Next j
Class Module
Public WithEvents btn As MSForms.CommandButton
Dim WithEvents mCombobox As MSForms.comboBox
Private combolist() As String
'*******EDIT********
Public Indx As Long
Property Let comboBox(cb As MSForms.comboBox)
Set mCombobox = cb
End Property
'*******************
Private Sub btn_Click()
If btn.Caption = "Cancel" Then
MsgBox "Cancel"
Unload UserForm1
Variables.ComponentSelectionError = False
ElseIf btn.Caption = "Enter" Then
MsgBox "enter"
Unload UserForm1
Variables.ComponentSelectionError = True
End If
End Sub
Private Sub mCombobox_Click()
'*******EDIT********
MsgBox "Combobox " & Indx & Chr(9) & mComboBox.Value
'*******************
End Sub
Since you require many to one mapping of the events, I assume you have a common call-back in your actual code, so you could also do this...
In a Standard Module
Public Sub cbCallBack(ocb As clsButton)
MsgBox ocb.Indx
End Sub
In clsButton (replacing the event handler)
Private Sub mCombobox_Click()
cbCallBack Me
End Sub