How to manipulate another cell when excel is in edit mode

Question

Hi,

I'm writing a RTD server in c++. it works fine, but I noticed that when excel cell is in edit mode RTD cells does not get updated. I would like to know whether there is a way to update RTD cells even when the excel is edit mode.

I know that I can use Excel COM object to directly write any value to a cell.(with out using RTD). But I do not know whether I can write value to a cell when excel is in edit mode. Please Clarify.

Thank you