findstringinapp?

[trnew]

Hi again.This time I'm curious about how to find a string... in any application.

It's not really important for me to find the string like from an image, but I wonder if there is a way to search for a string of a selectable value(like this forum's text) and then if the value matched the search value do something like messagebox "Value found".I'd like to find this selectable value in any application, but if it's not possible, then I want to know how it is done for Internet.

Thanks for helping me out.