title: Can't get GetPositionFromPoint to work well (WPF, C#)
body: <p>I am trying to use the GetPositionFromPoint, and in the documentation it talks about the snapToText bool which, if false, <em>"returns null if point is not inside a character's bounding box"</em>. Anyway, I am receiving always a null TextPointer, even when my Point is on a character. I leave my code here, I am using a checkbox (called "check") to see if the TextPointer is null or not, and it is always unchecked:</p>
  
  <pre><code>Point posicion = Mouse.GetPosition(Application.Current.MainWindow);
  TextPointer posAhora = richTextBox1.GetPositionFromPoint(posicion, false);
  if(posAhora != null)
  {
     check.IsChecked = true;
  }
  else
  {
     check.IsChecked = false;
  }
  </code></pre>
  
  <p>Thank you!</p>