Question

swing dimension question

Asked by: klnhk

I am using GridBagLayout, I found it is very hard to put components in it, and I cannot not control the dimension of the whole frame too, those components are crowded in the center.

How can I do such that the result frames are fixed to (eg, 800, 600) and the components use most of the size of the frame?

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Asked On
2002-07-31 at 02:24:36ID20330430
Topic

Java Programming Language

Participating Experts
6
Points
200
Comments
7

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Answers

 

by: s_laviePosted on 2002-07-31 at 03:50:34ID: 7190198

 

by: mzimmer74Posted on 2002-07-31 at 05:42:39ID: 7190395

One of the first places I look for any questions about Swing is a book by Matthew Robinson called, appropriately enough, Swing.  You can find it online at http://manning.spindoczine.com/sbe/.  If you look at chapter 4 (http://manning.com/sbe/files/uts2/Chapter4html/Chapter4.htm) you'll see an huge section devoted to using GridBagLayout.  The part that was especially helpful to me was "4.3.8 Putting it all together: Constructing a complaints dialog" as it helps teach you how to think in terms of a grid when designing your frame.

Most likely, the part you're missing is setting your weight and fill values in the GridBagConstraints.  If weight is 1, you'll fill up the grid cell you're in. If weight is 0, you'll use the preferred size of the component (which is why you're in the center only).  If fill is set to GridBagConstraints.BOTH, you'll expand to completely fill the container you're in (ie a JPanel or JFrame) both horizontally and vertically.

GridBagLayout is an extremely difficult layout to figure out.  However, once you do it is also extremely powerful.  Read through the example in the Swing book and see if that helps any.  If not, feel free to post some code and I'll see if I can spot the problem.  Good luck.

 

by: heyhey_Posted on 2002-07-31 at 07:30:49ID: 7190712

use nested panels with appropriate layouts (BorderLayout, GridLayout and FlowLayout(CENTER) are your friends :)

 

by: kylarPosted on 2002-07-31 at 13:26:45ID: 7191741

>> If weight is 1, you'll fill up the grid cell you're in. If >>weight is 0, you'll use the preferred size of the component >>(which is why you're in the center only).

This isn't correct. Weight defines what percentage of extra space the component will recieve. so if you have a component that has a weight of 0.8, and a component in the same Y-space that has 0.2 weight, the first will get 80% of any extra space and the second will get 20% of the extra space. All weights in a single line (vertical or horizontal) *should* add up to 1.0.

Cheers,
K

 

by: objectsPosted on 2002-07-31 at 17:58:38ID: 7192220

Try something like:

JFrame f = new JFrame();
f.getContentPane().setLayout(new BorderLayout());
JPanel components = new JPanel();
f.getContentPane().add(BorderLayout.CENTER, components);
f.setSize(800, 600);

 

by: girionisPosted on 2003-07-18 at 08:17:17ID: 8952572

No comment has been added lately, so it's time to clean up this TA.

I will leave a recommendation in the Cleanup topic area that this question is:

- split points between s_lavie and mzimmer74

Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

girionis
Cleanup Volunteer

20120131-EE-VQP-002

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