如何禁用Excel 2010特性/bug，从而停止计算单元格的选择?

I am working on an excel sheet in which, with the help of an xll addin, I am trying to update the data. I press Ctrl+Alt+F9 to start the calculations, but the calculation stops at any keypress or cell selection. Is there a way to override this feature, or bug?I am working on an excel sheet in which, with t