Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, and 2013. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Determining How Many Windows are Open.
It is sometimes helpful for your macro to know how many Excel workbook windows are open at any given time. For instance, you might want your macro to only run if there is a single window open, or you might even require there to be two windows open. Either way, you need to check how many there are.
You determine the number of open windows by using the Count property of the Windows object. This is done using the following syntax:
X = Windows.Count
After executing the line, X is equal to the number of open windows.
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (10652) applies to Microsoft Excel 2007, 2010, and 2013. You can find a version of this tip for the older menu interface of Excel here: Determining How Many Windows are Open.
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Please Note:
This article is written for users of the following Microsoft Excel versions: 2007, 2010, and 2013. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: 
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