Question

I have a COM (C++) API that listens for data updates from a server and writes these updates to a sheet. These updates are handled in VBA code and can arrive multiple times a second. In order to write these updates to the sheet in the most efficient manner, I use the following premise:

 Application.ScreenUpdating = False
 Application.Calculation = xlCalculationManual

 <UPDATE CODE>
 Application.ScreenUpdating = True
 Application.Calculation = xlCalculationAutomatic

In fact, I schedule a procedure to do this regular intervals where ScreenUpdating = False for about 20 seconds, then it is set to true so the data can update and then I set it to false again. i have found that this is a better option than setting ScreenUpdates + Calculation explicitly simply because of the highfrequency of the updates I receive.

The Problem:

I have read here that excel sets ScreenUpdating = True at the end of each method that disables it which is not what I need.

The Question:

Is there some way to force Excel to not automatically enable ScreenUpdating?

Answer 1

See if these help with your APIs

http://msdn.microsoft.com/en-us/library/ff818516%28v=vs.85%29.aspx

http://msdn.microsoft.com/en-us/library/windows/desktop/ee461765%28v=vs.85%29.aspx

I just searched google for “list of apis microsoft”