I'm not sure whether there are plans to add this feature in the future, but this is actually doable at the moment. The only thing that you need is Microsoft Office with MODI (Microsoft Office Document Imaging) installed. It is not included in the default options when you install Microsoft Office, so you will manually have to select that it will be installed.

MODI is the OCR engine that ships with Microsoft Office. You can use VBScript to OCR an image file using MODI and retrieve the results in a variable in WinAutomation.

I have attached 2 jobs that demonstrate how you can OCR the entire screen: depending on your OS type (32 or 64 bit) you should run the corresponding job. 

Finally, you can OCR only the active window if you change the "Take Screenshot" action to grab a screenshot of the foreground window.

Thanks for the solution.

 No problem! :)

abbyy screenshot reader for free (maybe time limited)
http://www.abbyy.com/bonusSR/
 
this tool can convert screenshot areas in editable plain text. enjoy.

Thank you for sharing JKan

:)
Samantha