J2ME

Development Platform:

Java

commandTestCanvas.java：Code Content

							package commandTest;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import java.io.*;
public class commandTestCanvas extends Canvas
{
	private Command  backCmd = new Command("后退", Command.SCREEN, 1);
	public commandTestCanvas()
        {        
        	System.out.println(getHeight());
        	setFullScreenMode(true);
        	System.out.println(getHeight());
    
        }
        public void paint(Graphics g)
       
        {   int width=this.getWidth();
            int height=this.getHeight();
            g.setColor(0xFFFFFF);
            g.fillRect(0,0,width,height);       
        }
        protected void keyPressed(int keyCode){
        System.out.println("键盘"+getKeyName(keyCode)+"被按下，值为"+keyCode);
        }
        protected void keyReleased(int keyCode){
        System.out.println("键盘"+getKeyName(keyCode)+"释放");
        }
        protected void keyRepeated(int keyCode){
        System.out.println("键盘"+getKeyName(keyCode)+"被持续按下");
        }
     
}

						