Expanding a row in a list

Hi guys,

I have the following problem. I have a list (similar like a list in an Excel file) that contains data. If the width of a row is to short the string in the cell will not be shown completely. I want to use Sikuli to go through the list and find the right string. Since the string is not completely shown I can not compare it a picture. I have to first expand the cell so that I can se the whole string and than I can use image recognition. Any ideas on how to do this?

Thanks