True if screen updating is turned on. Read/write Boolean.
Syntax
expression.ScreenUpdating
expression A variable that represents an Application object.
Remarks
Turn screen updating off to speed up your macro code. You won't be able to see what the macro is doing, but it will run faster.
Remember to set the ScreenUpdating property back to True when your macro ends.
Example
This example demonstrates how turning off screen updating can make your code run faster. The example hides every other column on ActiveSheet, while keeping track of the time it takes to do so. The first time the example hides the columns, screen updating is turned on; the second time, screen updating is turned off. When you run this example, you can compare the respective running times, which are displayed in the message box.
Sub ElapsedTime()
Dim ElapsedTime(2), i As Integer, startTime As Date, stopTime As Date, c As Range
Application.ScreenUpdating = True
For i = 1 To 2
If i = 2 Then Application.ScreenUpdating = False
startTime = Time
Worksheets.Add
For Each c In ActiveSheet.Columns
If c.Column Mod 2 = 0 Then
c.hidden = True
End If
Next c
stopTime = Time
ElapsedTime(i) = (stopTime - startTime) * 24 * 60 * 60
Next i
Application.ScreenUpdating = True
MsgBox "Elapsed time, screen updating on: " & ElapsedTime(1) & " sec." & Chr(13) & "Elapsed time, screen updating off: " & ElapsedTime(2) & " sec."
End Sub