Application.UndoEnabled property (Visio)
Determines whether undo information is maintained in memory. Read/write.
Syntax
expression.UndoEnabled
expression A variable that represents an Application object.
Return value
Boolean
Remarks
When Microsoft Visio starts, the value of the UndoEnabled property is True. Setting the value of the UndoEnabled property to False discontinues the collection of undo information in memory and clears the existing undo information.
You should attempt to maintain the property at its current value across the complete operation that you perform. In other words, use code structured like this:
blsPrevious = Application.UndoEnabled
Application.UndoEnabled = False
'Large operation here
Application.UndoEnabled = blsPrevious
Example
The following Microsoft Visual Basic for Applications (VBA) macro shows how to use the UndoEnabled method to disable and then re-enable undo behavior in Visio.
Public Sub UndoEnabled_Example()
'Disable undo
Application.UndoEnabled = False
'Draw three shapes.
ActivePage.DrawRectangle 1, 2, 2, 1
ActivePage.DrawOval 3, 4, 4, 3
ActivePage.DrawLine 4, 5, 5, 4
'Enable undo.
Application.UndoEnabled = True
End Sub
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