I've seen a similar problem on PCs when (get this) they are using an
NVIDIA card and its OpenGL settings have antialiasing set to 4 (2, 8,
or 16 work fine). The connection between OpenGL settings and Swing is
inscrutable, but the problem is 100% reproducible.
On Mac, I've seen a problem like this when resizing windows. After you
resize, the window does not repaint. The hideous workaround is below:
In the class we surround all JFrames with:
Timer refreshTimer;
in the constructor...
if (System.getProperty("os.name").startsWith("Mac"))
{
refreshTimer = new Timer(1000, new ActionListener () {
public void actionPerformed(ActionEvent evt) {
forceRefresh();
}
});
refreshTimer.setRepeats(false);
}
public void componentResized(ComponentEvent evt)
{
super.componentResized(evt);
if (refreshTimer != null)
refreshTimer.restart();
}
The timer is there so that it does not constantly call forceRefresh as
the user drags the size around. The extreme violence I do to the
windows in forceRefresh is the minimum I could find that would actually
get the thing to repaint.
-Joshua
On Sep 14, 2006, at 12:08 PM, Peter Richterich wrote:
We have a problem with Swing applications not displaying properly.
Several
users have reported totally or partially blank windows, and sent screen
shots. This started happening about 2 weeks ago on G4s and dual G5s
running
Java 1.4.2_09 on 10.4.7.
Unfortunately, we cannot reproduce the problem on any of our test
machines.
Our applications have behaved without problems for several years now,
with
hundreds of users (about half on Windows, though). The last time we
had a
similar problem was when we still had to use Java 1.3 on OS X 10.2
(many
drawing / repaint problems there).
Did anyone notice any similar problems recently? Any suggestions on
how to
address this? In the past, problems with our app could often be traced
to a
particular Apple update (Java, Quicktime, ...). I could not find
anything
this time, though, except for one unanswered post here from August 6.
Any help and suggestions would be very welcome.
Peter
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