I found by chance it was possible to display a combo box with zenity (version tested: 2.32.1). See the following code:

#!/bin/bash

array=(a b c d e)

value=$(zenity --entry --title "Window title" --text "${array[@]}" --text "Insert your choice.")

The result is illustrated with the following 3 images:

I have two questions about that:

1. Is there a documentation about this functionality? I didn't find anything in the zenity documentation.




2. Why the first value of my array doesn't appear in the combo box? In the example above, my array is (a b c d e), and the combo box only displays b c d e.

   
   
   

   As a workaround, I add a value in my array, for example (0 a b c d e).