title: Get the text under the mouse pointer in windows in any application
body: <p>Before I've performed adding this question I've searched in this site for my question - According to website's posting rules - and I found these links and it didn't help me:</p>
  
  <ol>
  <li><a href="https://stackoverflow.com/questions/11373103/get-word-under-mouse-pointer">Get word under mouse pointer</a></li>
  <li><a href="https://stackoverflow.com/questions/4273860/get-the-text-under-the-mouse-pointer">get the text under the mouse pointer</a></li>
  <li><a href="https://stackoverflow.com/questions/2183335/getting-the-text-under-the-mouse-pointer">Getting the text under the mouse pointer</a></li>
  </ol>
  
  <p>My questions is:
  I'm programming a Geology dictionary and it is available for users now, but I want to add a feature that make users see the translation of a specific word when they move their mouse on it for a specific period and the word may be in any app like MS Word,IE,Firefox or any other app (I quoted this idea from the Easy Lingo dictionary if you know it), then the application will perform a query in the database and return the result to the user in a tooltip or something like that at the position of the mouse.
  So, how can I get the word under the mouse pointer, is that an API or what?
  <br>
  Would you help me please? </p>