How to read values off a Windows app?

Question

I need to pull values off a Windows application at regular intervals. Since the values do not appear in a field, I am not able to use Win32 API calls to get them (I figured that out using WinID, a tool that will display information on windows and controls and stuff).

I tried using the Office MODI OLE object and the Tesseract CLI tool, but the results were quite poor.

I then wrote an small ruby script that grabs the appropriate window, and then calls Textract (http://www.brothersoft.com/textract-8510.html), which is indeed quite good at reading the values.

Problem is, it comes as a 40 day trial, and it looks like the vendor doesn't exists any more, so I can't even buy it (although I wouldn't mind it).

Does anyone know of an alternate library I can use?