Cancel a zoom from a button using VBA

Operators can cancel a zoom at runtime by right-clicking on the control and then selecting
Undo Zoom/Pan
. However, you can also provide a button on the
FactoryTalk View
 SE display that can cancel a zoom.
If you are setting up many buttons in your display, you can use the VBA option to help your application run faster.
To cancel a zoom from a button using VBA:
  1. Add a button to a graphic display, and then click
    OK
    .
  2. Right-click the trend object and then select
    VBA code
    .
  3. Return to
    FactoryTalk View Studio
    , right-click the button object and then select
    VBA code
    .
  4. Type the name of the Trend object in the button released event code area.
    Private Sub Button1_Released()
    Trend1
    End Sub
  5. Press the period key and then select
    CancelZoom
    from the list.
    Trend1.CancelZoom
  6. Test the display.
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