How do I embed a dhtmlxCombo into a dhtmlxToolBar?

How do I embed a dhtmlxCombo into a dhtmlxToolBar?

Currently there is no support for such kind of integration
Possible workaround may be in using label button and manual combo initialization in it

some.xml
    …
    <![CDATA[
      


    ]]>  
    …

toolbar.loadXML(“some.xml”,function(){
    var combo = new dhtmlxCombo(“my_cont”);
    …
})