title: Flex - Disable tooltip on checkbox inside inline renderer on DataGrid?
body: <p>Hi I'm trying to remove the tooltip from the checkbox inside an inline itemrenderer in a datagrid but I still get the tooltip box but with nothing in it.  I want the tooltip box removed completely.  Here is what I have</p>
  
  <pre><code>&lt;mx:DataGrid dataProvider="{s}" width="80%" id="sdg"&gt;
          &lt;mx:columns&gt;
              &lt;mx:DataGridColumn width="14" paddingLeft="2" paddingRight="2" showDataTips="false"&gt;
                  &lt;mx:itemRenderer&gt;
                      &lt;mx:Component&gt;
                          &lt;mx:CheckBox change="data.selected = !data.selected; dispatchEvent(new Event('clickCheckbox',true,true))" 
                              selectedField="selected" toolTip="{null}"/&gt;
                      &lt;/mx:Component&gt;
  
                  &lt;/mx:itemRenderer&gt;
              &lt;/mx:DataGridColumn&gt;
  &lt;/mx:columns&gt;
  &lt;/mx:Datagrid&gt;
  </code></pre>