The quest for the Excel custom function tooltip

Question

This question has been asked before, but each time the accepted answer is simply a resignation to provide function descriptions using Application.MacroOptions (

Answer 1

What is XLL?

An XLL is a DLL that exports several procedures that are called by Excel or the Excel Add-in Manager. http://msdn.microsoft.com/en-us/library/office/bb687861.aspx

How you develop the XLL?

Excel XLL SDK with Visual C++ (or anything that can compile a DLL and call the SDK procedures)

Where I can find a quick guide for creating a simple XLL?

http://support.microsoft.com/kb/178474

How I get tooltips?

1. Implement your function as a procedure and export it
2. Implement and export procedure xlAutoOpen(void) - http://msdn.microsoft.com/en-us/library/office/bb687860.aspx
3. xlAutoOpen just needs to call xlfRegister - http://msdn.microsoft.com/en-us/library/office/bb687900.aspx
4. For tooltips, special attention for: pxArgumentText, pxFunctionHelp, pxArgumentHelp1

Sadly, the Analysis Toolpak add-in doesn't have tooltips either.

My solution was wrong, but with wrong information posted by the original poster. Showing a picture with BINOMDIST, if his link clearly shows that this is not a function of ANALYS32.xll.

This means I was trying to solve an impossible question. Because there is no XLL that can do what the poster requested. If you find a version of Excel that show tooltips of XLLs, please let me know.

About what the poster asked, trying to mimic the XLL behavior, I am sure my answer was the most correct in relation of what ANALYS32.xll do.