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Text Capture in Cocoa
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Text Capture in Cocoa


  • Subject: Text Capture in Cocoa
  • From: Randy Crump <email@hidden>
  • Date: Fri, 16 Jun 2006 10:54:59 -0700

Hi all,

I am developing a dictionary and want to support text capture using the mouse.
I want to hover the mouse over any text on the screen (be it on a button, on a web page,
in a document, or in Finder), and capture that word in my program, then translate it.


For a real feeling, just try Apple's own dictionary: hover your mouse over any word
in a document or web page, and press "Apple + Ctrl + D", a floating panel will appear and
show the explanation of the word. That's the behavior I want to implement.


Is there any Cocoa API that I can use to grab the word under the mouse? Do I need to
intercept the drawing APIs? How can I do it?


Any advice is appreciated.

Yaogang


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