Using Eval to call a control event

  • Thread starter Thread starter Carl Rapson
  • Start date Start date
C

Carl Rapson

I'm programmatically setting a combo box value using a DLookUp, and I would
like to simulate the combo box's AfterUpdate event. The problem is, I'm not
working with the control directly -- I'm iterating through the Controls
collection and setting each control, something like:

Dim ctl as Control
For Each ctl In Me.Controls
If (ctl.ControlType = acTextBox) Or (ctl.ControlType = acComboBox)
Then
ctl.Value = DLookup("[Default Name]", "[CSM Defaults]",
"[BA]='" & strBA & "' AND [Office]='" & strOffice & "'")
Eval ctl.Name & "_AfterUpdate()"
End If
End If
Next

The control value gets set OK, but I get an error 2425 on the Eval statement
(the database can't find the function name). I know the control events are
Subs, not Functions; is that the problem? Does Eval only work with
Functions? Is there another way to do what I want, using either Eval or
another method?

Thanks for any information,

Carl Rapson
 
If you change the scope of the event procedures from Private to Public, you
can do it with CallByName ...

Public Sub Combo0_AfterUpdate()
MsgBox "Combo0 AfterUpdate"
End Sub

Public Sub Combo2_AfterUpdate()
MsgBox "Combo2 AfterUpdate"
End Sub

Private Sub Command4_Click()
Dim ctl As Control
For Each ctl In Me.Controls
If ctl.ControlType = acComboBox Then
CallByName Me, ctl.Name & "_AfterUpdate", VbMethod
End If
Next ctl
End Sub
 
Thank very much, Brendan, it works like a charm. That's the first time I've
come across CallByName. It definitely goes in my reference file.

Carl Rapson

Brendan Reynolds said:
If you change the scope of the event procedures from Private to Public,
you can do it with CallByName ...

Public Sub Combo0_AfterUpdate()
MsgBox "Combo0 AfterUpdate"
End Sub

Public Sub Combo2_AfterUpdate()
MsgBox "Combo2 AfterUpdate"
End Sub

Private Sub Command4_Click()
Dim ctl As Control
For Each ctl In Me.Controls
If ctl.ControlType = acComboBox Then
CallByName Me, ctl.Name & "_AfterUpdate", VbMethod
End If
Next ctl
End Sub

--
Brendan Reynolds (MVP)

Carl Rapson said:
I'm programmatically setting a combo box value using a DLookUp, and I
would like to simulate the combo box's AfterUpdate event. The problem is,
I'm not working with the control directly -- I'm iterating through the
Controls collection and setting each control, something like:

Dim ctl as Control
For Each ctl In Me.Controls
If (ctl.ControlType = acTextBox) Or (ctl.ControlType = acComboBox)
Then
ctl.Value = DLookup("[Default Name]", "[CSM Defaults]",
"[BA]='" & strBA & "' AND [Office]='" & strOffice & "'")
Eval ctl.Name & "_AfterUpdate()"
End If
End If
Next

The control value gets set OK, but I get an error 2425 on the Eval
statement (the database can't find the function name). I know the control
events are Subs, not Functions; is that the problem? Does Eval only work
with Functions? Is there another way to do what I want, using either Eval
or another method?

Thanks for any information,

Carl Rapson
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