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Question of the Week presents answers to key questions posed by the
developer community. The intent is to pass this
important, but not always easy-to-find information on to JDC members.
The questions are selected from the JDC newsgroups generally because:
they are frequently asked, they are significant or timely, or their answers are not
easily
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Note: If you have a question to which you need an answer, try the
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Question of the Week
Archive
 Topic: Changing fonts in
Swing.
Question:
How do I change a Swing font across my whole application?
I would like to change the font for all panels, labels, menus, and so on, in my Swing
application. I have tried to change the font using setFont as follows:
frame.getContentPane().setFont( sysfont );
However, the original default font continues to be used.
Is there a way to do this in Swing or AWT?
Answer:
Unless you want to define your own 'look and feel,' you should update the user default
font properties via the keys you see from: UIManager.getDefaults.
There is no magic way to alter panels, labels, menus, tooltips, and so on, with one
statement, because they must all be set separately. For instance, the keyname for
Panel is Panel.font, and the keyname for ToolTip
is ToolTip.font, but that pattern
breaks down for some Components, such as MenuItem.acceleratorFont.
Once you have the keyname, you should be able to make your 'global' change by
using the put method of the UIManager class.
For example:
UIManager.put("ToolTip.font",new Font("SansSerif",Font.ITALIC,10));
changes the font for all tooltips. And
UIManager.put("Label.font",new Font("SansSerif",Font.ITALIC,10));
will change the font for all labels.
Many thanks to JDC members, rwiditz, and rockhopper for contributing to this
answer.
Sat Nov 14 10:05:30 PST 1998
ananthr
Inside the actionListener for a button called
"Add one more textfield", I wrote code to
add a new JTextField, but it is not showing
up immediately unless I resize the screen. Is ther
an explanation and how would I correct it?
Thanks
Sat Nov 14 11:19:50 PST 1998
ananthr
Earlier on in the code, I had added a few
JTextFields to a frame, and later on, I added
the following code, which doesn't work:
JTextField txtfield=(JTextField)getComponent(3);
txtfield.setText("You clicked the button");
//txtfield.setText("You clicked the button");
Mon Nov 16 08:25:39 PST 1998
Anonymous
How do I tell the XML Parser to ignore whitespace and still be able to use "XMLDocumentBuilder.createDocument(..)" which is a static function?
Mon Nov 16 23:20:02 PST 1998
xiaoming_yang
How can I get a connection to oracle 7.3 for NT with the JDBC in Appplet.
Tue Nov 17 02:40:02 PST 1998
106065.432
Maybe it's a good idea to use a global Font variable, if all fonts point to that variable then all off these fonts are updated. if they do not update automaticaly you should make a new class that performs an update for the mentioned compnents
Tue Nov 17 06:22:38 PST 1998
AkroGirl
Is there possible to use ProgressBars when developing in
JDK 1.1.6 ? And is it possible to connect it to
a database so he checks how long time there is left?
I´m very greatful for your help!!
regards //Karin Johansson
Wed Nov 18 13:14:24 PST 1998
gurucharan
Hello there!!!
I love JAVA ... and this makes my luv even more
better. :)
thanks,
gurucharan.
Wed Nov 18 19:35:12 PST 1998
randy.schrickel
Sure would be nice if there was a reasonable way
to do this! The property names only seem to be
documented/mentioned in the Swing source code.
Would love to have the flexibility of X Windows
resource file for tasks like this.
Thu Nov 19 02:01:21 PST 1998
nisn
Good one!
Thu Nov 19 08:38:13 PST 1998
cargo
This works well in alot of situations - is it not
complete for a container hierarchy?
public static void changeFont(Component cmp, Font font) {
cmp.setFont(font);
if (cmp instanceof Container) {
Component[] kids = ((Container)cmp).getComponents();
for (int i = 0 ; i < kids.length ; i++) {
changeFont(kids[i], font);
}
}
return;
}
Thu Nov 19 11:27:00 PST 1998
rwiditz
In addition to fonts, this technique also works well for L&F colors...
Thu Nov 19 17:25:44 PST 1998
doguntack
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Thu Nov 19 19:22:46 PST 1998
anven
answer is very clear.
Fri Nov 20 01:24:13 PST 1998
CJanssen
Ok, but how do I put this in effect for existing Components? A call to JPanel.UIupdate() or JButton.UIupdate() for example shows no reaction.
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