实现Undo和Redo AS3 All

Question

all events页面是如何实现Undo和Redo的?3如何将Ctrl+Z和Ctrl+Y与all Event一起使用？！/着色文本单击绘制擦除/

谢谢

Answer 1

Ctrl键、Alt键和Shift键实际上是KeyboardEvent的布尔值。

所以，像这样做一个普通的事件监听器：

addEventListener(KeyboardEvent.KEY_DOWN, keyDownFunction);

然后，像往常一样调用函数时，使用(e:KeyboardEvent)变量来获取e.ctrlKey的布尔值(true =已按下，false =未按下)。

if (e.ctrlKey)
{
    // Check any keys that you want to use as CTRL commands here.
}

if (e.shiftKey)
{
    // Check any keys that you want to use as SHIFT commands here.
}

if (e.altKey)
{
    // Check any keys that you want to use as ALT commands here.
}