Question

I would like to get fractional timer resolution in an Excel VBA project that has to be compatible with Windows Excel 2007 and Mac OS Excel 2011. Ive found a method in windows utilizing sleep from kernel32.dll and a method on Mac OS using MacScript("GetMilliSec").

I currently have limited access to a Mac, so I am not able to test this out directly right now. If I declare Sleep like this:

Private Declare Sub Sleep Lib "kernel32.dll" (ByVal dwMilliseconds As Long)

Will an error be raised when the file is opened in a Mac? Or will the error be flagged only when/if Sleep is called in a Mac?

Answer 1

I believe you’ll need to use conditional compilation to avoid your API declaration causing an error on a Mac.

   #If Mac Then
      MsgBox "I'm a Mac"
   #Else
      MsgBox "I'm a PC"
   #End If