When window open, you can't use select All with Command + A
Because the listbox doesn't have the focus
Need first click inside listbox for give keyboard focus
WorkAround:
When Window Open, set focus directly to ListBox
great also like xojo, when you hit a "letter" like "O" select the first event begin by the letter "Opening"
example:
key "C" "CancelClosing"
key "A" "Activated"