How to avoid circular reference when excel cell update

Posted by Nimo on Stack Overflow See other posts from Stack Overflow or by Nimo
Published on 2010-03-03T07:13:44Z Indexed on 2010/05/05 13:28 UTC
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excel

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vba

Hi,

I'm writing a set of functions in c++ which can be called by excel. However, these functions are asynchronous, therefore no immediate return values available. Once a result is available I used a callback function through VBA which update the result to the relevant cell which called the functions.

But, here I'm having circular function calling problem, because when I update the cell. excel automatically call the original function once again. Please help me to get around this problem

Thank You

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