Possible Duplicate:
Babylon Text Select
Like Babylon. When you click on a word, it grabs the text. How can I do this? Thanks.
Possible Duplicate:
Babylon Text Select
Like Babylon. When you click on a word, it grabs the text. How can I do this? Thanks.
One way is Accessibility API, which will only work for applications that support screen readers. In C# you can use Managed Winapi for this, start at the SystemAccessibleObject class...
I think Babylon uses OCR on the displayed image, which works well as long as you use a standard font at standard sizes.