Chapter 7. Macro Hacks
Macros make it wonderfully easy to automate repetitive tasks in Excel, but the way they’re created and the facilities for using them are sometimes problematic. Fortunately, Excel is flexible enough that you can fix those problems and create new features with a minimum of effort.
Speed Up Code While Halting Screen Flicker
When you record macros from within Excel, the code it generates often produces screen flicker, which not only slows down your macro, but also makes the macro’s activity look very disorganized. Fortunately, you can eliminate screen flicker while at the same time speeding up your code.
One drawback with recorded macros in Excel is that the code produced is often very inefficient. This can mean macros that should take a matter of seconds to complete often take a lot longer and look very unsightly. Also, when you write macros using the macro recorder, all keystrokes are recorded, whether they are meant to be or not. This means that if you make an error and then correct it, the keystrokes required to complete those actions also will be recorded in your macro code.
If you have played around a bit with
macros or dabbled in VBA code, you might have heard of the
Application.ScreenUpdating property. By setting
ScreenUpdating to False at the start of a macro, you will not only stop the constant screen flicker associated with a recorded macro, but also speed up the macro’s execution. The reason this method speeds up code is because ...