GridbagLayout basics

[Scott Steiner]

Hi,

I want to get the following arrangment of buttons:

# button 0 #
# button 1 ## button 2#

but I'm getting this instead:

# button 0 #
# button 1 #

here's the code, what am I doing wrong?

pane.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;

JButton button;

button = new JButton("Button 0");
c.weightx = 1;
c.gridwidth = 2;
c.gridx = 0;
c.gridy = 0;
pane.add(button, c);

button = new JButton("Button 1");
c.weightx = 0.5;
c.gridx = 0;
c.gridy = 1;
pane.add(button, c);

button = new JButton("Button 2");
c.weightx = 0.5;
c.gridx = 1;
c.gridy = 1;
pane.add(button, c);

 

[Thomas Hawtin]

Hi,

I want to get the following arrangment of buttons:

# button 0 #
# button 1 ## button 2#

but I'm getting this instead:

# button 0 #
# button 1 #

here's the code, what am I doing wrong?

button = new JButton("Button 0");
c.weightx = 1;
c.gridwidth = 2;
c.gridx = 0;
c.gridy = 0;
pane.add(button, c);

button = new JButton("Button 1");
c.weightx = 0.5; c.gridwidth = 1;
c.gridx = 0;
c.gridy = 1;
pane.add(button, c);
[...]

Tom Hawtin

 

[Carl]

Hi,

I want to get the following arrangment of buttons:

# button 0 #
# button 1 ## button 2#

but I'm getting this instead:

# button 0 #
# button 1 #

here's the code, what am I doing wrong?

pane.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.HORIZONTAL;

JButton button;

button = new JButton("Button 0");
c.weightx = 1;
c.gridwidth = 2;
c.gridx = 0;
c.gridy = 0;
pane.add(button, c);

button = new JButton("Button 1");
c.weightx = 0.5;
c.gridx = 0;
c.gridy = 1;
pane.add(button, c);

button = new JButton("Button 2");
c.weightx = 0.5;
c.gridx = 1;
c.gridy = 1;
pane.add(button, c);

One problem I see is that you set the gridwidth to "2", but never set it
back to 1 for the buttons you want to appear side by side. I believe
that will solve your problem.

Carl.

 

[Roedy Green]

button = new JButton("Button 0");
c.weightx = 1;
c.gridwidth = 2;
c.gridx = 0;
c.gridy = 0;
pane.add(button, c);

button = new JButton("Button 1");
c.weightx = 0.5;
c.gridx = 0;
c.gridy = 1;
pane.add(button, c);

button = new JButton("Button 2");
c.weightx = 0.5;
c.gridx = 1;
c.gridy = 1;
pane.add(button, c);

see
http://mindprod.com/jgloss/gridbaglayout.html


You should not be reusing your constraint object. It leads too easily
to errors like this where you set gridwidth=2 for all your buttons.
You need to set it back to 1.

--
Bush crime family lost/embezzled $3 trillion from Pentagon.
Complicit Bush-friendly media keeps mum. Rumsfeld confesses on video.
http://www.infowars.com/articles/us/mckinney_grills_rumsfeld.htm

Canadian Mind Products, Roedy Green.
See http://mindprod.com/iraq.html photos of Bush's war crimes

 

[David Segall]

Welcome back Roedy. I have missed your advice.