key-press event的意思|示意

The first check performed ensures that a key press and key-release event is recorded for a given entry.

执行的第一个检查将确保记录给定输入的按键和释放事件。

We can then either type a new event handler method name to use, or optionally just press the enter key to name the event handler method using the default naming convention.

然后我们可以输入一个要用的新事件处理方法的名称，或者只要点击回车键，使用默认的命名约定来命名事件处理方法。

As you may recall from the xev testing performed above, an individual key press or key-release event causes four or five lines to be printed by the xev program.

从上面执行的xev测试可以看到，单个按键或释放事件将导致xev程序打印四行或五行输出。