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Form.Undo Event (Access)

Occurs when the user undoes a change.

expression .Undo(Cancel)

expression A variable that represents a Form object.

Parameters

Name

Required/Optional

Data Type

Description

Cancel

Required

Integer

Set this argument to True to cancel the undo operation and leave the control or form in its edited state.

The Undo event for controls occurs whenever the user returns a control to its original state by clicking the Undo Field/Record button on the command bar, clicking the Undo button, pressing the ESC key, or calling the Undo method of the specified control. The control needs to have focus in all three cases. The event does not occur if the user clicks the Undo Typing button on the command bar.

The Undo event for forms occurs whenever the user returns a form to its original state by clicking the Undo button, pressing the ESC key, or calling the Undo method of the specified form.

The following example demonstrates the syntax for a subroutine that traps the Undo event for a form.

Private Sub Form_Undo(Cancel As Integer) 
 Dim intResponse As Integer 
 Dim strPrompt As String 
 
 strPrompt = "Cancel the undo operation?" 
 
 intResponse = MsgBox(strPrompt, vbYesNo) 
 
 If intResponse = vbYes Then 
 Cancel = True 
 Else 
 Cancel = False 
 End If 
End Sub

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