Is there a way to make UDF that gives a description like the native Excel functions have when user clicks the Fx button?

Question

If I type =vlookup( (or any other native Excel function) in the formula bar and then click the little Fx button to the left of the formula I get a Function Arguments prompt with all the available arguments. In that prompt, below the functional arguments, is a one or two sentence description of the function and of each argument as you move your cursor from each argument's input box.

When I type in the name of my UDF and click the Fx I get an input box for all of my arguments but that is it. Is there a way I can add those same helpful type of descriptions that native Excel functions have?

Answer 1

I suggest further investigating the Application.MacroOptions method. That method allows you to provide not only a description for the function, but also a description for each of the arguments. For example, if you have a function called "SampleFunction" that takes two arguments, you can run the following and it will set you up nicely for using the fx button with your function.:

Private Sub RegisterMyFunction()
    Application.MacroOptions _
        Macro:="SampleFunction", _
        Description:="calculates a result based on provided inputs", _
        Category:="My UDF Category", _
        ArgumentDescriptions:=Array( _
            "is the first argument.  tell the user what it does", _
            "is the second argument.  tell the user what it does")
End Sub

Answer 2

Type =FormulaName( into a cell and then press Ctrl+Shift+A and it will fill in the reference name of the arguments