keyboard.java

来自「精通Java网络编程代码全部」· Java 代码 · 共 23 行

//Keyboard.java 
import java.awt.*; 
import java.applet.*; 
public class Keyboard extends Applet 
{ 
	String text=""; 
	public void paint(Graphics g) 
	{
		g.drawString(text,20,20);} 
	public boolean keyDown(Event evt,int x)//键盘被按下的处理函数 
	{ 
		text="Key Down"; 
		repaint(); 
		return true; 
	} 
	public boolean keyUp(Event evt,int x)//键盘被松开的处理函数 
	{ 
		text=""; 
		repaint(); 
		return true; 
	} 
}