Vba excel screenupdating false
Article contributed by Daryl Lucas Many people know they can speed execution of Word Automation by turning off screen updating: Word. Screen Updating = False Many do not know, however, that they can get an even greater speed boost by hiding the application altogether.Here is an example from a Visual Basic client: In the above example, Word launches but does not appear anywhere on the screen. (It does, though, show up in NT's Task Manager, in its list of running processes.) Despite this apparent lack of response, Word is very active and quite capable of doing everything it is told-creating a new document, inserting the message, , saving the file, closing it, and quitting.Declare Function Find Window Lib "user32" Alias "Find Window A" _ (By Val lp Class Name As String, _ By Val lp Window Name As Long) As Long ' Use Lock Window Update to prevent/enable window refresh Declare Function Lock Window Update Lib "user32" _ (By Val hwnd Lock As Long) As Long ' Use Update Window to force a refresh of the Power Point window Declare Function Update Window Lib "user32" (By Val hwnd As Long) As Long Property Let Screen Updating(State As Boolean) Static hwnd As Long Dim Version No As String ' Get Version Number If State = False Then Version No = Left(Application. Version, ".") - 1) ' Get handle to the main application window using Class Name Select Case Version No Case "8" ' For PPT97: hwnd = Find Window("PP97Frame Class", 0&) Case "9" ' For PPT2K: hwnd = Find Window("PP9Frame Class", 0&) Case "10" ' For XP: hwnd = Find Window("PP10Frame Class", 0&) Case "11" ' For 2003: hwnd = Find Window("PP11Frame Class", 0&) Case "12" ' For 2007: hwnd = Find Window("PP12Frame Class", 0&) Case "14" ' For 2010: hwnd = Find Window("PPTFrame Class", 0&) Case "15" ' For 2013: hwnd = Find Window("PPTFrame Class", 0&) Case Else Err.Raise Number:=vb Object Error ERR_VERSION_NOT_SUPPORTED, _ Description:="Newer version." Exit Property End Select If hwnd = 0 Then Err.
Raise Number:=vb Object Error ERR_WINDOW_LOCK_FAIL, _ Description:="Unable to set a Power Point window lock" Exit Property End If Else ' Unlock the Window to refresh Lock Window Update (0&) Update Window (hwnd) hwnd = 0 End If End Property 'Sample Usage: Sub Long Processing Sub() ' Lock screen redraw Screen Updating=False ' --- Long time consuming code ' Redraw screen again Screen Updating=True ' Also see below article for another example of usage of the code End Sub It's fairly simple to open a Power Point file (*.ppt) for editing using VBA code however opening a Power Point Show (*.pps) file for editing is altogether another matter. Open method and it defaults to open the file in Slide Show mode. The routine below illustrates a manner of woring around the default behaviour and opening the file for editing.Here is a simple code which gives a message box showing the values in column A starting from row 2 to the last row. The status bar will show the message “Macro running” as the code is running, and once the code is done, it will show “Ready” which is one of the default Excel messages. Display Status Bar = True With Worksheets(“Sheet1”) lrow = . ' This includes both posting free demo projects made from this ' code as well as reproducing the code in text or html format.' --------------------------------------------------------------------------------' User Defined Error codes Const ERR_NO_WINDOW_HANDLE As Long = 1000 Const ERR_WINDOW_LOCK_FAIL As Long = 1001 Const ERR_VERSION_NOT_SUPPORTED As Long = 1002 ' API declarations for Find Window() & Lock Window Update() ' Use Find Window API to locate the Power Point handle.
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Setting the calculation mode back to xl Calculation Automatic will automatically trigger a recalculation of the worksheet. Calculation = xl Calculation Manual You may notice that when your macros run, your screen does a fair amount of flickering.