Article View: cn.bbs.comp.lang.java
Article #18863���ҿ���
From: ��
Date: Wed, 21 Jan 2004 07:05
Date: Wed, 21 Jan 2004 07:05
49 lines
1881 bytes
1881 bytes
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class Canvas extends Applet implements MouseListener{
graphicsCanvas gc;
Button button1;
public void init()
{
gc=new graphicsCanvas();
gc.setSize(100,100);
add(gc);
addMouseListener(this);
}
public void mouseClicked(MouseEvent e)
{
for(int loop_index=0;loop_index<150;loop_index++)
{
gc.setLocation(loop_index,0);
}
}
public void mousePressed(MouseEvent e)
{
}
public void mouseReleased(MouseEvent e)
{
}
public void mouseEntered(MouseEvent e)
{
}
public void mouseExited(MouseEvent e)
{
}
}
class graphicsCanvas extends java.awt.Canvas
{ ~~~~~~~~~~~~~~~~~���ij�Canvas��û��Ч����,why?
public void paint(Graphics q)
{
q.drawOval(10,50,40,40);
q.drawLine(10,50,50,90);
q.drawLine(50,50,10,90);
}
}
--
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X-Google-Language: ENGLISH,GB X-Google-Thread: f6cb0,e9987f4683b2dfdd,start X-Google-Attributes: gidf6cb0,public X-Google-ArrivalTime: 2004-01-20 23:07:52 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!c03.atl99!sjc70.webusenet.com!news.webusenet.com!news.bylinux.net!news.ccie.net.cn!Freecity From: Shinjia.bbs@freecity.cnzju.net (��) Newsgroups: cn.bbs.comp.lang.java Subject: ���ҿ��� Date: 21 Jan 2004 07:05:21 GMT Organization: Ʈ��ˮ�Ƽ� Message-ID: <4ALK2c$AyT@freecity.cnzju.net> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit X-Filename: Java/M.1074668678.A Lines: 49