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The LayoutManager repositions it. Put:

this.setLayout(null);

inside void comp_mouseDragged(MouseEvent e) or wherever;


jleuschner@expede.net wrote:


> Howdy,
>
>         I have written a simple app in JBuilder that allows me to grab
> a component and move it around on the screen. This part works great,
> but when I resize the frame/window the widgets move back to their
> original location. Can someone explain this to me? I've attached
> the original code.
>
> Thanks,
>
> Jeff
>
> import java.awt.*;
> import java.awt.event.*;
> import borland.jbcl.control.*;
> import borland.jbcl.layout.*;
> import com.f1j.*;
> import com.sun.java.swing.*;
>
> public class frame extends DecoratedFrame
> {
>
>    //Construct the frame
>    JLabel jLabel1 = new JLabel();
>    XYLayout xYLayout1 = new XYLayout();
>    JButton jButton1 = new JButton();
>    java.awt.Point currentPoint;
>    JTabbedPane jTabbedPane1 = new JTabbedPane();
>    JTextArea jTextArea1 = new JTextArea();
>    JTextArea jTextArea2 = new JTextArea();
>    JTextArea jTextArea3 = new JTextArea();
>
>    public frame()
>    {
>       try
>       {
>          jbInit();
>       }
>       catch (Exception e)
>       {
>          e.printStackTrace();
>       }
>    }
> //Component initialization
>
>    private void jbInit() throws Exception
>    {
>       this.setLayout(xYLayout1);
>       this.setSize(new Dimension(507, 448));
>       this.setTitle("Frame Title");
>       jLabel1.setText("jLabel1");
>       addMouseStuff(jLabel1);
>       jButton1.setText("jButton1");
>       jTextArea1.setText("jTextArea1");
>       jTextArea2.setText("jTextArea2");
>       jTextArea3.setText("jTextArea3");
>       addMouseStuff(jButton1);
>
>       this.add(jLabel1, new XYConstraints(0, 117, -1, -1));
>       this.add(jButton1, new XYConstraints(169, 10, -1, -1));
>       this.add(jTabbedPane1, new XYConstraints(78, 165, 357, 218));
>       jTabbedPane1.addTab("jTextArea1", jTextArea1);
>       jTabbedPane1.addTab("jTextArea2", jTextArea2);
>       jTabbedPane1.addTab("jTextArea3", jTextArea3);
>       addMouseStuff(jTabbedPane1);
>    }
>
>    void addMouseStuff(Component comp)
>    {
>          comp.addMouseMotionListener(new
> java.awt.event.MouseMotionAdapter()
>       {
>          public void mouseDragged(MouseEvent e)
>          {
>             comp_mouseDragged(e);
>          }
>       });
>       comp.addMouseListener(new java.awt.event.MouseAdapter()
>       {
>          public void mousePressed(MouseEvent e)
>          {
>             comp_mousePressed(e);
>          }
>          public void mouseReleased(MouseEvent e)
>          {
>             comp_mouseReleased(e);
>          }
>       });
>
>    }
>
>    void comp_mousePressed(MouseEvent e)
>    {
>         currentPoint = e.getPoint();
>    }
>
>    void comp_mouseReleased(MouseEvent e)
>    {
>       currentPoint = null;
>    }
>
>    void comp_mouseDragged(MouseEvent e)
>    {
>       if (currentPoint == null)
>          return;
>
>       java.awt.Point p = e.getPoint();
>       int xChange = p.x - currentPoint.x;
>       int yChange = p.y - currentPoint.y;
>       java.awt.Point lp = e.getComponent().getLocation();
>       lp.x+=xChange;
>       lp.y+=yChange;
>       e.getComponent().setLocation(lp);
>    }
> }
>
>





--
Lars Roe
612-625-7797
roex0029@tc.umn.edu

Can you explain this to me? I thought all panels required the layout?
I noticed that I get errors if I don't start out with a layout?
Also, why doesn't the original work?

Thanks,

Jeff

On Thu, 10 Sep 1998 14:31:33 -0500, Lars Roe <roex0029@tc.umn.edu>
wrote:

>The LayoutManager repositions it. Put:
>
>this.setLayout(null);
>
>inside void comp_mouseDragged(MouseEvent e) or wherever;
>
>
>jleuschner@expede.net wrote:
>
>
>> Howdy,
>>
>>         I have written a simple app in JBuilder that allows me to grab
>> a component and move it around on the screen. This part works great,
>> but when I resize the frame/window the widgets move back to their
>> original location. Can someone explain this to me? I've attached
>> the original code.
>>
>> Thanks,
>>
>> Jeff
>>
>> import java.awt.*;
>> import java.awt.event.*;
>> import borland.jbcl.control.*;
>> import borland.jbcl.layout.*;
>> import com.f1j.*;
>> import com.sun.java.swing.*;
>>
>> public class frame extends DecoratedFrame
>> {
>>
>>    //Construct the frame
>>    JLabel jLabel1 = new JLabel();
>>    XYLayout xYLayout1 = new XYLayout();
>>    JButton jButton1 = new JButton();
>>    java.awt.Point currentPoint;
>>    JTabbedPane jTabbedPane1 = new JTabbedPane();
>>    JTextArea jTextArea1 = new JTextArea();
>>    JTextArea jTextArea2 = new JTextArea();
>>    JTextArea jTextArea3 = new JTextArea();
>>
>>    public frame()
>>    {
>>       try
>>       {
>>          jbInit();
>>       }
>>       catch (Exception e)
>>       {
>>          e.printStackTrace();
>>       }
>>    }
>> //Component initialization
>>
>>    private void jbInit() throws Exception
>>    {
>>       this.setLayout(xYLayout1);
>>       this.setSize(new Dimension(507, 448));
>>       this.setTitle("Frame Title");
>>       jLabel1.setText("jLabel1");
>>       addMouseStuff(jLabel1);
>>       jButton1.setText("jButton1");
>>       jTextArea1.setText("jTextArea1");
>>       jTextArea2.setText("jTextArea2");
>>       jTextArea3.setText("jTextArea3");
>>       addMouseStuff(jButton1);
>>
>>       this.add(jLabel1, new XYConstraints(0, 117, -1, -1));
>>       this.add(jButton1, new XYConstraints(169, 10, -1, -1));
>>       this.add(jTabbedPane1, new XYConstraints(78, 165, 357, 218));
>>       jTabbedPane1.addTab("jTextArea1", jTextArea1);
>>       jTabbedPane1.addTab("jTextArea2", jTextArea2);
>>       jTabbedPane1.addTab("jTextArea3", jTextArea3);
>>       addMouseStuff(jTabbedPane1);
>>    }
>>
>>    void addMouseStuff(Component comp)
>>    {
>>          comp.addMouseMotionListener(new
>> java.awt.event.MouseMotionAdapter()
>>       {
>>          public void mouseDragged(MouseEvent e)
>>          {
>>             comp_mouseDragged(e);
>>          }
>>       });
>>       comp.addMouseListener(new java.awt.event.MouseAdapter()
>>       {
>>          public void mousePressed(MouseEvent e)
>>          {
>>             comp_mousePressed(e);
>>          }
>>          public void mouseReleased(MouseEvent e)
>>          {
>>             comp_mouseReleased(e);
>>          }
>>       });
>>
>>    }
>>
>>    void comp_mousePressed(MouseEvent e)
>>    {
>>         currentPoint = e.getPoint();
>>    }
>>
>>    void comp_mouseReleased(MouseEvent e)
>>    {
>>       currentPoint = null;
>>    }
>>
>>    void comp_mouseDragged(MouseEvent e)
>>    {
>>       if (currentPoint == null)
>>          return;
>>
>>       java.awt.Point p = e.getPoint();
>>       int xChange = p.x - currentPoint.x;
>>       int yChange = p.y - currentPoint.y;
>>       java.awt.Point lp = e.getComponent().getLocation();
>>       lp.x+=xChange;
>>       lp.y+=yChange;
>>       e.getComponent().setLocation(lp);
>>    }
>> }
>>
>>
>
>
>
>
>
>--
>Lars Roe
>612-625-7797
>roex0029@tc.umn.edu
>
>