title: Extjs 3.4 prevent ctrl + mouse click
body: <p>i`m using Ext.grid.GridPanel to populate my items from stores.
  Everything is working quite good, but i have one problem. </p>
  
  <p>When i press <kbd>ctrl</kbd> + mouse click on grids row, the row deselects. How could i prevent this action?</p>
  
  <p>I have tried writing function on mouse click event and key down event</p>
  
  <pre><code>this.grid.onClick = function(event){
              if (event.ctrlKey === true){
                  event.preventDefault();
                  event.stopPropagation();
              }
          };
  </code></pre>
  
  <p>also tried writing <code>return false;</code> instead of <code>event.preventDefault();                  event.stopPropagation();</code> but with no luck.</p>
  
  <p>Any suggestions?</p>