title: Combobox gets closed on MessageBox closure ZK
body: <p>I'm using ZK CE-9.0.0.</p>
  
  <p>I have a <code>combobox</code> which I need to open programmatically, on click of <code>OK</code> button of the <code>Messagebox</code>. Hence I have implemented a <code>Listener</code> for the click event of the <code>OK</code> button. Inside the click event, I'm opening the <code>combobox</code> by using the following code:</p>
  
  <pre><code>EventListener&lt;Messagebox.ClickEvent&gt; clickListener = new EventListener&lt;Messagebox.ClickEvent&gt;() {
      @Override
      public void onEvent(ClickEvent event) throws Exception {
          mycombo.open();
      }
  };
  Messagebox.Button[] buttons = new Messagebox.Button[] {Messagebox.Button.OK};
  Messagebox.show("Hi btn", buttons, clickListener);
  </code></pre>
  
  <p>Now the problem that I'm facing is, the <code>combobox</code> opens for half a second. It then immediately gets closed automatically.</p>
  
  <p>As per my understanding, it's because of the <code>Messagebox</code>. Once the execution of the click event is completed, the <code>Messagebox</code> is closed &amp; it causes the <code>combobox</code> also to be closed.</p>
  
  <p>Please have a look at <a href="https://zkfiddle.org/sample/1rkm5d/3-Combobox-gets-closed-on-MessageBox-close#source-2" rel="nofollow noreferrer">this</a> fiddler for better understanding. <strong>Please select the ZK version to be 9.0.0 before running it.</strong></p>
  
  <p>Can anyone help me with this please?</p>
  
  <p>Thanks,</p>
  
  <p>RAS</p>