title: Set control text in AutoIt with out window text and title
body: <p>I am quite newbie to autoit. I have 2 questions.</p>
  
  <ol>
  <li>How to use ControlFocus ( "", "", "[X:643;Y:339]" ) when widow has no text and no title.Please look at following information of window and control viewed by window informer.</li>
  </ol>
  
  <blockquote>
    <blockquote>
      <blockquote>
        <blockquote>
          <p>Window &lt;&lt;&lt;&lt;
          Title:
          Class: WindowsForms10.Window.8.app.0.33c0d9d
          Position: 0, 0
          Size: 1024, 768
          Style: 0x16010000
          ExStyle: 0x00010000
          Handle: 0x005201E0</p>
          
          <p>Control &lt;&lt;&lt;&lt;
          Class: WindowsForms10.EDIT.app.0.33c0d9d
          Instance: 2
          ClassnameNN: WindowsForms10.EDIT.app.0.33c0d9d2
          Name: txtConsumerNo
          Advanced (Class): [NAME:txtConsumerNo]
          ID: 15270262
          Text:
          Position: 638, 237
          Size: 263, 30
          ControlClick Coords: 38, 27
          Style: 0x560100C0
          ExStyle: 0x00000200
          Handle: 0x00E90176</p>
        </blockquote>
      </blockquote>
    </blockquote>
  </blockquote>
  
  <p>How is it possible to interact with this control?</p>
  
  <ol start="2">
  <li>I want to call text change event of a this control. How is it possible </li>
  </ol>