FindWindowEx

With the FindWindowEx API call, is there any way to grab the handle of a child object when there are multiple children of the same type (All have the same caption of "" )?

Example:

ThunderRT5Form
          |
           -- ThunderRT5UserControl
          |
           -- Thunder RT5UserControl
          |
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-- Thunder RT5UserControl <-- This is the one I want
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs p;&nbsp;&nbsp;&nbsp;|
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs p;&nbsp;&nbsp;&nbsp;&nbsp;-- ThunderRT5Text <-- so that I can talk to this control