This method sets up a reaction for a key event (keyUp, keyDown, etc...). The
action associated with this event, specified by the aAction parameter, is only
executed if the key modifiers are in the state specified. Key modifiers are the
Shift, Ctrl and Alt key states.
var box = scene.getBoxById("genericItem1");
if (box)
{
box.addKeyEventHandler("keyUp", "ENTER", "OnShowItemProps();", false, true, false);
}