It seems as thought the code below should do the trick, but it just shows me the list of items, not the count.
Gui, Add, ListBox, vColorChoice, Red|Green|Blue|Black|White Gui, Show,,ListBox ControlGet, List, List, [color=red]Count [/color],ListBox1, A MsgBox, %List% ExitApp ^esc::exitapp
How do I get a total count of items in a listbox?