Qt-jambi-interest Archive, November 2006
Example crashs on Mac
Message 1 in thread
Hi there,
I'm doing my first steps with Qt Jambi on my Mac. I tried a simple
program for some tests. I recieved a seg fault for this small example.
[code]
import com.trolltech.qt.gui.*;
public class test extends QMainWindow {
public static void main (String args[]){
QApplication.initialize(args);
QWidget wid = new QWidget();
wid.show();
QApplication.exec();
}
}
[/code]
I was quite confused, because these are also my first steps with Java,
but it seems that everything else works fine. Also the precompiled
examples work. Compiling is no problem, so I think it could be a Qt
Jambi problem, because the crash occurs in:
[snip]
0 libqtjambi.1.0.0.jnilib 0x06883ed4
StaticCache::resolveQtJambiInternal_internal() + 40
1 libqtjambi.1.0.0.jnilib 0x06886704
qtjambi_end_paint(JNIEnv_*, _jobject*) + 48
2 libQtGui.4.dylib 0x068f6b4c QWidget::event(QEvent*) + 908
[/snip]
Sometimes I get the message:
QWidget::repaint: Recursive repaint detected
Are there any other Mac users of Qt Jambi around who could help me out
or am I doing something else wrong?
Best regards
Tilman
PS:
My Java version:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-112)
Java HotSpot(TM) Client VM (build 1.5.0_06-64, mixed mode, sharing)
Message 2 in thread
Tilman Holschuh wrote:
> Hi there,
>
> I'm doing my first steps with Qt Jambi on my Mac. I tried a simple
> program for some tests. I recieved a seg fault for this small example.
...
> I was quite confused, because these are also my first steps with Java,
> but it seems that everything else works fine. Also the precompiled
> examples work. Compiling is no problem, so I think it could be a Qt
> Jambi problem, because the crash occurs in:
Hi Tilman,
Did you start the virtual machine with the option -XstartOnFirstThread?
Qt Jambi on Mac OS X requires this flag to properly run. This is because
of the way Swing and the Java virtual machine on Mac OS X cooperate with
Quartz.
If you run the examples you see that the qtjambi.sh bash script passes
this command along as well as setting the DYLD_LIBRARY_PATH to the lib
directory.
best regards,
Gunnar
