It's show() not open, and you can use an event to get what you selected.
All GUI objects have these functions on this page:
http://wiki.graal.net/index.php/Crea...ent/GuiControl
PHP Code:
//#CLIENTSIDE
// < Your GUI Stuff Here >
function YourGUITextListName.onDblClick(entryid,entrytext,entryindex) {
echo("You selected: " @ entrytext);
}
See here for other events GuiTextListCtrl has:
http://wiki.graal.net/index.php/Crea...uiTextListCtrl