ID: Q142123
The information in this article applies to:
When you create a custom function in Microsoft Excel using Visual Basic for Applications, it will be displayed in the Function Wizard under the User Defined Function category. You can prevent the custom function from being displayed in the Function Wizard by adding "Option Private Module" at the top of the module sheet.
Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact the Microsoft fee-based consulting line at (800) 936-5200. For more information about the support options available from Microsoft, please see the following page on the World Wide Web:
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1. On the File menu, click New to open a new workbook.
2. In Microsoft Excel 97 or later, point to Macro on the Tools menu, and
then click Visual Basic Editor. In Excel version 7.0 or earlier, point
to Macro on the Insert menu, and then click Module. Then click Module on
the Insert menu.
3. Type the following code:
'Statement needed to keep function out of Function Wizard
Option Private Module
'Sample function
Function AddTwoNumbers(Number1, Number2)
AddTwoNumbers = Number1 + Number2
End Function
4. On Sheet1, click Function on the Insert menu, and then click
All in the Function Category.
Note that AddTwoNumbers is not listed as a function Name in Step 1 of the
Function Wizard.
If you remove the "Option Private Module" line from the module sheet, go back to Sheet1, and then click Function on the Insert menu, the AddTwoNumbers function is listed.
Note that when you add "Option Private Module" to the module sheet, functions and subroutines on that sheet are unavailable to other workbooks.
"Visual Basic User's Guide," version 5.0, Chapter 4, "Protecting Modules from Calls by Other Procedures in Other Workbooks"
For more information about Option Private Module, click the Index tab Microsoft Excel Help and type:
Option Private Module
Additional query words: 5.00 5.00a 5.00c 7.00
Keywords : kbtool
Version : WINDOWS:5.0,5.0c,7.0; MACINTOSH:5.0,5.0a
Platform : MACINTOSH WINDOWS
Issue type : kbhowto kbinfo
Last Reviewed: May 17, 1999