java Me中的按键和触屏接口的处理示例(2)

private boolean key_event=true;

private boolean pointer_event=true;

private int startx=0;

private int starty=0;//开始坐标位置

private int currentx = 0;//当前指针坐标位置

private int  currenty = 0;  

private  KeyCanvas keycanvas=null;

private Command exit=null;

public keyPanel(KeyCanvas key)

{

keycanvas=key;

exit=new Command("exit",Command.EXIT,1);

this.addCommand(exit);

this.setCommandListener(this);

}

protected void paint(Graphics g)

{

  g.setColor(0);

  g.fillRect(0,0,this.getWidth(),this.getHeight());

  g.setColor(255);

  if(key_event)

     g.drawString(key, this.getWidth()/2,this.getHeight()/2,Graphics.TOP|Graphics.HCENTER);    

  if(pointer_event)