其应用方法有按键开关法、键盘消息法和鼠标消息法。

The application method includes button switch method, keyboard information method and mouse information method.

youdao

我不喜欢玩具，我只喜欢有按键的东西，如手机、键盘、遥控板等。

I didn't like toys. I only like things with buttons, such as a mobile phone, keyboard, and remote-control panel.

youdao

屏幕虚拟键盘使得语言即时转换功能得以实现，这个虚拟键盘有按键可以反映你选择的语言。

That feature is made possible by the on-screen keyboard, with keys that change to reflect the language you've selected.

youdao

Anything that tells him to sense something like the user's mouse or the edge of his screen is actually purple in color; and so they're nicely colorized and all this but the one that's adventurous right now is this.

能够让计算机感知鼠标或屏幕边缘的图块,都是紫色的;,这些图块五颜六色,但这里有一个不太靠谱的按键。

哈佛公开课 - 计算机科学课程节选