I am trying to add a dropdown to a popup window title bar. I modified the basic usage demo to do this and here is a dojo. When you click the button to open the window, a dropdown is added to the title bar. However, the dropdown is unresponsive -- when I click on it, the dropdown list does not appear and I cannot change the selection either by mouse or keyboard.
How do I make the dropdown responsive to clicks or the keyboard, like one would expect a dropdown to respond?