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Excel user defined function tooltip, or help documentation to hint user what to input

Experts,

Here is classic problem with User Defined Function in Excel. How do you solve the problem of letting user know what to input in a UDF, how many arguments, what argument do what, any optional argument, etc.?

I read it somewhere that to have a tooltip for UDF is not easy. What about some kind of help that will pop up when we invoke the UDF, or anything that will hint user when they use the function at the first instance in a Excel section.

Any idea will help.
Thanks,
RDB
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ResourcefulDB
Asked:
ResourcefulDB
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1 Solution
 
Wayne Taylor (webtubbs)Commented:
You can use the Application.MacroOptions method to add a description and such to a UDF. Note though that ArgumentOptions is only available in XL2010 and later.
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ResourcefulDBAuthor Commented:
I use office 2010, so it should have that feature.

Where can be a good place to find examples of this ArgumentOptions?

What does this application.macrooptions do? I use Excel buildin function, such as worksheetfunction before, such as worksheetfunction.max, what is this application? Is it the same as worksheetfunction?

Thanks,
RDB
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Wayne Taylor (webtubbs)Commented:
ArgumentOptions accepts an array of descriptions for each of your arguments. Those descriptions can be whatever you want. A good article on it's usage is here.

MacroOptions does what you asked for. It allows you to assign descriptions that are visible when you use the Insert Function dialog.

"Application" refers to the Excel application.
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ResourcefulDBAuthor Commented:
Got you.

How is this "application" different than worksheetfunction?

Is there a place to find out what functions this application have? such as application.macroOptions?

Thanks,
RDB
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Wayne Taylor (webtubbs)Commented:
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