title: Prevent textbox from losing focus when mouse leaves
body: <p>When typing/highlighting in a textbox, it loses focus immediately upon moving the mouse out of it. How do I prevent this? I only want it to lose focus if I'm clicking on another control mainly.</p>
  
  <p>I hooked up the <code>LostFocus</code> event, just not sure what to put in it: </p>
  
  <pre><code>private void TB_LostFocus(object sender, EventArgs e)
  {
  
  }
  </code></pre>
  
  <p>Is there a better way than looping through every other control to check if they have focus, than reassigning focus to the textbox if none of them have it?</p>