●●●● (高分、在线等您回答)为什么我拖动图片时，连线不随着图片移动!!程序如下：能否修改或指点

Question

http://expert.csdn.net/Expert/topic/1320/1320496.xml?temp=.4722254
希望你结贴！

Answer 1

真该结贴了
刚看了
to beyond_xiruo(希偌) 
看了你的程序，功底真深，佩服！！！ 

Answer 2

现在程序中问题和您上次回答的不一样？
    图片都是新生成的，不知道其名称，所以图片动时，线不随着动， beyond_xiruo(希偌)能否帮我看一下代码，谢谢
   我会马上结帖的？
   等

Answer 3

其余帖子已结，图片如下（随便几个图片）：
http://www.itfuture.cc/images/1.gif    http://www.itfuture.cc/images/2.gif
http://www.itfuture.cc/images/1.jpg    http://www.itfuture.cc/images/2.jpg
http://www.itfuture.cc/images/3.jpg    http://www.itfuture.cc/images/4.jpg
等您回音。
如果可以很快也会结帖的！
谢谢您！

Answer 4

我刚学用Appelt做GUI，我参考beyond_xiruo(希偌)也写了程序，还有一些问题我没办法解决，所以再请他帮忙。
    我很想自己做，但时间很有限。
    我慢慢会熟练的！

Answer 5

import javax.swing.*;
   import java.awt.*;
   import java.awt.image.*;
   import java.awt.event.*;
   import java.applet.*;
   import java.util.Vector;
   import java.awt.geom.*;public class applet5 extends Applet {
    JButton linebutton=new JButton();
    Image img1=null;
    Image img2=null;
    Image img3=null;
    Image img4=null;
    Image img01=null,img02=null;
    int width1=0,height1=0,w1=0,h1=0,wid1=0,hei1=0,w11=0,h11=0;
    int width2=0,height2=0,w2=0,h2=0,wid2=0,hei2=0,w22=0,h22=0;//可以改成数组
    canvas can1=null;
    canvas can2=null;
    canvas current=null;
    canvas startobj,endobj;
    canvas1 can01=null;
    canvas1 can02=null;
    canvas1 can03=null;
    canvas1 can04=null;
    canvas  check=null;
    MediaTracker mt=new MediaTracker(this);
    Vector objects=new Vector();
    Vector lines  =new Vector();
    boolean blnDrawLine;
    boolean blnAddObj;
    int startX=0,startY=0,endX=0,endY=0,start=0,end=0,order=0,a=0,b=0;
    //初始化小程序
    public void init()
    {
      img01=this.getImage(this.getCodeBase(),"help.gif");//开始1
      img02=this.getImage(this.getCodeBase(),"openFile.gif");//结束1      img1=this.getImage(this.getCodeBase(),"closeFile.gif");//图片1
      img2=this.getImage(this.getCodeBase(),"help.gif");//图片2
      img3=this.getImage(this.getCodeBase(),"openFile.gif");//图片3
      img4=this.getImage(this.getCodeBase(),"help.gif");//图片4
      this.setLayout(null);
//      JPanel bar=new JPanel();
//      FlowLayout flow=new FlowLayout();
//      bar.setLayout(null);
//      JPanel main=new JPanel();
//      BorderLayout border=new BorderLayout();
//      main.setLayout(null);
//      this.add(bar,BorderLayout.NORTH);
//      this.add(main,BorderLayout.CENTER);
      this.setSize(1000,600);
      mt.addImage(img01,0);
      mt.addImage(img02,0);
      mt.addImage(img1,0);
      mt.addImage(img2,0);
      mt.addImage(img3,0);
      mt.addImage(img4,0);
      try{
   mt.waitForAll();
 }catch(Exception ex){
   System.err.println(ex.toString());
 }
can1=new canvas(img01);//实例化一个帆布
can2=new canvas(img02);//实例化另一个帆布
can01=new canvas1(img1);
can02=new canvas1(img2);
can03=new canvas1(img3);
can04=new canvas1(img4);
width1 =img1.getWidth(this);
height1=img1.getHeight(this); width2 =img2.getWidth(this);
height2=img2.getHeight(this);
wid1=hei1=100;
wid2=hei2=200;
this.add(can1);
this.add(can2);
can1.setBounds(100,100,img01.getWidth(this),img01.getHeight(this));
can2.setBounds(200,200,img02.getWidth(this),img02.getHeight(this));
objects.add(objects.size(),can1);
objects.add(objects.size(),can2);
this.add(can01);
this.add(can02);
this.add(can03);
this.add(can04);
linebutton.setText("连线----");
linebutton.addActionListener(new ActionListener(){
  public void actionPerformed(ActionEvent e)
  {
      btnLine_actionPerformed(e);
  }
 });
can01.setBounds(0,0,img1.getWidth(this),img1.getHeight(this));
can02.setBounds(100,0,img2.getWidth(this),img2.getWidth(this));
can03.setBounds(200,0,img3.getWidth(this),img3.getWidth(this));
can04.setBounds(300,0,img4.getWidth(this),img4.getWidth(this));
//this.add(linebutton);
this.add(linebutton);
//linebutton.setBounds(400,0,100,69);
this.addMouseListener(new MouseAdapter() {
    public void mouseClicked(MouseEvent e) {
      addcanvas(e);
    }
   });
    }    public void paint(Graphics g) {
      g.drawString(Integer.toString(lines.size()),100,100);      for(int i=0;i<lines.size();i++){
cavLine line=(cavLine)lines.elementAt(i);
int startX=line.start.getX()+line.start.getWidth()/2;
        int startY=line.start.getY()+line.start.getHeight()/2;
int endX=line.end.getX()+line.end.getWidth()/2;
int endY=line.end.getY()+line.end.getHeight()/2;
if (line!=null) {
    g.drawLine(startX,startY,endX,endY);
}
      }
     // g.setXORMode(Color.white);
     // g.drawLine(wid1+width1/2,hei1+height1/2,wid2+width2/2,hei2+height2/2);
    }
    public void removecanvas(KeyEvent e)
    {
this.remove(this.current);
this.validate();
this.repaint();
     }    class canvas extends Canvas
    {
      Image im1=null;
      public canvas(Image im) {
super();
im1=im;
this.addMouseMotionListener(new MouseMotionAdapter() {
  public void mouseDragged(MouseEvent e) {
    if(e.getSource()==current)
    {
      w1=e.getX();
      h1=e.getY();       //wid1=((applet5)((canvas)e.getSource()).getParent()).can1.getX();
      //hei1=((applet5)((canvas)e.getSource()).getParent()).can1.getY();
      wid1=current.getX();
      hei1=current.getY();
      ((applet5)((canvas)e.getSource()).getParent()).current.setBounds(wid1+w1-w11,hei1+h1-h11,current.getWidth(),current.getHeight());
      ((applet5)((canvas)e.getSource()).getParent()).validate();
      ((canvas)e.getSource()).repaint();
      ((applet5)((canvas)e.getSource()).getParent()).repaint();
    }
  }
}); this.addMouseListener(new MouseAdapter() {
  public void mousePressed(MouseEvent e) {
    if(e.getSource()==current) {
      w11=e.getX();
      h11=e.getY();
    }
   if(start==0&&blnDrawLine){
     a=findObj(e);
     startobj=(canvas)objects.get(a);
     startX=startobj.getX()+startobj.getWidth()/2;
     startY=startobj.getY()+startobj.getHeight()/2;
     start=1;
   }else if(start==1&&blnDrawLine){
     b=findObj(e);
     if(b!=a){
     endobj=(canvas)objects.get(b);
     endX=endobj.getX()+endobj.getWidth()/2;
     endY=endobj.getY()+endobj.getHeight()/2;
     lines.addElement(new cavLine(startobj,endobj)); //
     startobj=null;
     endobj  =null;
     blnDrawLine=false;
     start=0;
     ((applet5)(((canvas)e.getSource()).getParent())).repaint();
     repaint();
     }else{
     start=1;
     }
   }
  }
  public void mouseEntered(MouseEvent e){
     ((applet5)(((canvas)e.getSource()).getParent())).current=(canvas)e.getSource();
  }
});
this.addKeyListener(new KeyAdapter(){
   public void keyPressed(KeyEvent e){
       if(e.getKeyChar()=='o'){
  ((applet5)((canvas)e.getSource()).getParent()).removecanvas(e);
       }else if(e.getKeyCode()==e.VK_DELETE){
  ((applet5)((canvas)e.getSource()).getParent()).removecanvas(e);
       }
   }
});      }      public void paint(Graphics g) {
g.drawImage(im1,0,0,this);
      }
    }    class canvas1 extends Canvas
    {
       Image im2=null;
       public canvas1(Image im)
       {
 super();
 im2=im;
 this.addMouseListener(new MouseAdapter(){
    public void  mouseClicked(MouseEvent e){
   //((applet5)((canvas1)e.getSource()).getParent()).check=(canvas1)e.getSource();
     ((applet5)((canvas1)e.getSource()).getParent()).check=new canvas(((canvas1)e.getSource()).im2);
       blnDrawLine = false;
       blnAddObj = true;
   }
 });
       }
       public void paint(Graphics g) {
g.drawImage(im2,0,0,this);
      }
    }    public void addcanvas(MouseEvent e) {
       if(check!=null&&blnAddObj)
       {
 if (e.getModifiers() == MouseEvent.BUTTON3_MASK)
 {
   this.add(check);
   check.setBounds(e.getX(), e.getY(), width1, height1);
   objects.add(objects.size(),check);
   this.validate();
   current=check;
   check=null;
  }
       }else{
   return;
       }
     }
     //点击工具栏上的连线图标才能画线
     void btnLine_actionPerformed(ActionEvent e)
     {
       blnDrawLine = true;
       blnAddObj = false;
     }     public int findObj(MouseEvent e)
     {
       order=objects.indexOf(e.getSource());
       return order;
    }  class cavLine {
      public canvas start;
      public canvas end;
      cavLine(canvas start,canvas end){
      this.start=start;
      this.end=end;
      }    }
}程序又点乱,经小改动
测试过正常

Answer 6

文档终于完成，你看看吧
http://www.csdn.net/develop/read_article.asp?id=16454

Answer 7

谢谢 beyond_xiruo(希偌)：
    在您的帮助下我会学好java的GUI编程，而且本版在在您的管理下会越来越好。一有时间就会向您学习。
    谢谢