Excel macro screen updating
, Excel and VBA expert Curt Frye introduces object-oriented programming and shows how to automate routine tasks and provide custom functionality to enhance Excel performance and efficiency.This course introduces the Visual Basic for Applications programming language, covers creating subroutines and functions to hold code, and provides a solid grounding in the Excel 2007 object model.If you are using a macro that calls for a lots of modifications to your worksheet, Excel will update its display each time the worksheet is modified, which can cause the macro to run considerably slower ...To tell Excel not to update the display, add this to your code : The following test was carried out by the macro that generates the annual calendar for the Calendar-Pratique application.' 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.Raise Number:=vb Object Error ERR_NO_WINDOW_HANDLE, _ Description:="Unable to get the Power Point Window handle" Exit Property End If If Lock Window Update(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.
To insert the formula itself into cell A3, use the following code line: Sometimes you may find it useful to disable screen updating (to avoid flickering) while executing code. You can instruct Excel VBA not to display alerts while executing code. For example, place a command button on your worksheet and add the following code line: When you click the command button on the worksheet, Excel VBA closes your Excel file and asks you to save the changes you made. To instruct Excel VBA not to display this alert while executing code, update the code as follows. As a result, Excel recalculates the workbook automatically each time a value affecting a formula changes.
However, I *can* change the Screen Updating from the immediate window. Screen Updating = False b Global Change Event = True Application. About to go home for the day, but I plan on trying to print Application. So while Screen Updating always is True in debug mode, this is not the issue for me.
Sub load Portfolio() Dim i Test As Integer, portfolio Version As String Application. :-) Basically, after all those statements (and between each one) Screen Updating remains "True". Screen Updating = False For i = 1 To 10000 Worksheets("Sheet1"). Screenupdating = False worked perfectly in Excel 2007 until last week, when it remained True however many times I tried to set it to False.
Excel & Word have the Screen Updating method thru which a developer can lock the main window from unnecessarily redrawing itself whilst the macro is being executed. If left alone, redrawing is not only ugly on the eyes it also takes more time for the macro to reach completion.
Hence I created this generic wrapper to lock the window updates.