How to prevent a window from resizing?

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Arnoud - 21 Aug 2003 23:42 GMT

Is there a way do disable the (default) resize option (right corner
with the mouse)of a Window??

Thanks in advance

Arnoud

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Carl - 22 Aug 2003 13:32 GMT

I don't think it is good practice to take away a basic user control
like the ability to resize a window. But you can do it by:

<yourJFrame>.setResizable(false);

> Is there a way do disable the (default) resize option (right corner
> with the mouse)of a Window??
>
> Thanks in advance
>
> Arnoud

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Sandip Chitale - 22 Aug 2003 17:41 GMT

java.awt.Window is not resizable as there are no resize handles. You
can resize java.awt.Window objects programatically. So I assume you mean
java.awt.FRame when you say Window.

java.awt.Frame has a method:

public void setResizable(boolean resizable)

Sets whether this frame is resizable by the user.

In JDK1.4, you can use turn off the frame decorations with

frame.setUndecorated(true);

This will make it look like a Window.

Prior to JDK1.4 you may have to listen to ComponentEvent and reset
the size every time in the componentResized(ComponentEvent ce) callback.
You could also override the setSize(Dimension) and setBounds(...) methods.

> Is there a way do disable the (default) resize option (right corner
> with the mouse)of a Window??
>
> Thanks in advance
>
> Arnoud

Reply to this Message

Sandip Chitale - 23 Aug 2003 02:49 GMT

Here is a more general example of min and max size:
/**
* FrameResize.java
*
* @author Sandip Chitale
*/
import java.awt.*;
import java.awt.event.*;

public class FrameResize extends Frame {

    public static void main(String args[])
    {
        Frame f = new FrameResize();
        f.setSize(300, 300);
        f.setVisible(true);
        f.addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent e) {System.exit(0);}
            });

        f.addComponentListener(
            new ComponentAdapter() {
                    public void componentResized(ComponentEvent ce)
                    {
                        Frame sf = (Frame) ce.getComponent();
                        sf.removeComponentListener(this);
                        sf.setSize(
                            Math.min(Math.max(sf.getSize().width, 200), 500) ,
Math.min(Math.max(sf.getSize().height, 200),500)
                            );
                        sf.addComponentListener(this);
                    }
                }
            );
    }

}// FrameResize

> java.awt.Window is not resizable as there are no resize handles. You
> can resize java.awt.Window objects programatically. So I assume you mean
[quoted text clipped - 22 lines]
> >
> > Arnoud

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How to prevent a window from resizing?

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