A question about deprecated widget

[galtgendo o2 pl]

As API reference states and both FAQ and tutorial on gtk.org have yet to 
notice, GTK_COMBO has been deprecated for some time. There's of course 
advice about GTK_COMBO_BOX, but that's not what I have in mind.
As such I've got following questions:
1. One of the parts of GTK_COMBO seemed to be a scrolled window, what 
would be the simplest combination of widgets to have similar 
look-and-feel, cause GTK_COMBO_BOX with longer lists is simply ugly.
2. As GTK_COMBO_BOX uses GTK_LIST_STORE, what would be the most 
efficient way to transform a GList or char** to such thing.