如何在和keydown 事件上添加事件侦听Ctrl+C器。我正在尝试以下关于按键功能的语句:Ctrl+VCtrl+X
public function OnKeyDown(e:KeyboardEvent){
if((e.ctrlKey && (e.keyCode == Keyboard.C)) {
trace ("copy");
}else if((e.ctrlKey && (e.keyCode == Keyboard.V)) {
trace ("paste");
}else if((e.ctrlKey && (e.keyCode == Keyboard.X)) {
trace ("cut");
}
}