Gnome makes application crash

[regix]

Hi,

I have made a qt application. It works fine in KDE. The problem I'm having is that in Gnome the application terminates each time the user uses an inputdialog or a colordialog.
Is there something I can do to prevent the application from terminating in Gnome.
As I said in KDE the application behaves correctly.
some examplecode where the program stops in Gnome:

void EditCSSDlg::changeTitleColor()
{
    QColor changed = QColorDialog::getColor(Qt::white);
    QPixmap colpixmap(30,30);
    colpixmap.fill(changed);
    this->pushButtonColor->setPixmap(colpixmap);
    this->titlecolor = changed.name();    
}

void EditCSSDlg::changeTitleColor()
{
    QColor changed = QColorDialog::getColor(Qt::white);
    QPixmap colpixmap(30,30);
    colpixmap.fill(changed);
    this->pushButtonColor->setPixmap(colpixmap);
    this->titlecolor = changed.name();    
}

To copy to clipboard, switch view to plain text mode 

the application never gets to the instantiation of the QPixmap.

regix

[jacek]

What Qt version do you use? Did you upgrade GNOME libraries recently?

[regix]

I'm using qt3 (don't know wich version -- version that came with openSuse 10.1)
I used smart upgrade to update all packages so I guess gnome was updated too.

Regix

[regix]

update

I found a file named libqt-mt.so.3.3.5 so I guess this is the version of qt.

Regix

[jacek]

I used smart upgrade to update all packages so I guess gnome was updated too

The crash might be caused by some incompatibility between libraries on your system. Make sure that all GNOME and Qt libraries were updated correctly.

[regix]

The same behaviour happened when somebody else tested my application on Ubuntu. He used a version of Ubuntu that is already more than a half year old.

Regix

[regix]

I just tried the application under GNOME on Suse 10 and the same strange behaviour happens there. It looks like GNOME is not happy with the Qt dialogs.

regix

[jacek]

Does this crash?

#include <qcolordialog.h>
#include <qapplication.h>
 
int main( int argc, char **argv )
{
   QApplication app( argc, argv );
   QColorDialog::getColor();
   return 0;
}

#include <qcolordialog.h>
#include <qapplication.h>

int main( int argc, char **argv )
{
   QApplication app( argc, argv );
   QColorDialog::getColor();
   return 0;
}

To copy to clipboard, switch view to plain text mode 

(compile it in debug mode and run from gdb).

[regix]

QMetaObject::findSignal:MagickFontDlgImpl: Conflict with MagickFontDlg::fontChosen()
teff instantiated
QMetaObject::findSignal:DlgTextEffect: Conflict with dlgTextEffectBase::doneTextOnPictures()
websitedialogimpl gemaakt
thumbnailgenerator gemaakt en voorzien van achtergrondkleur
themeimpl gemaakt en voorzien van achtergrondkleur
setting htmldestination in makeSite
destroying dlgcssimpl
Destroying websitedialogimpl
deleting teff
 
Program exited normally.
(gdb)

QMetaObject::findSignal:MagickFontDlgImpl: Conflict with MagickFontDlg::fontChosen()
teff instantiated
QMetaObject::findSignal:DlgTextEffect: Conflict with dlgTextEffectBase::doneTextOnPictures()
websitedialogimpl gemaakt
thumbnailgenerator gemaakt en voorzien van achtergrondkleur
themeimpl gemaakt en voorzien van achtergrondkleur
setting htmldestination in makeSite
destroying dlgcssimpl
Destroying websitedialogimpl
deleting teff

Program exited normally.
(gdb)

To copy to clipboard, switch view to plain text mode 

This is what I get as output from gdb

[jacek]

Program exited normally.

It looks like it didn't crash.

QMetaObject::findSignal:DlgTextEffect: Conflict with dlgTextEffectBase::doneTextOnPictures()

This is a bit weird, check your code.

[regix]

In my code doneTextOnPictures() is a signal
I added the signal in designer under the Members tab of the Object Explorer.
I emit the signal in the implementationfile of the Subclasse and connect to it in another class.

??
The code works in KDE

[jacek]

I added the signal in designer under the Members tab of the Object Explorer.

Maybe you have declared it in "signals:" section in the subclass too?

The code works in KDE

This doesn't prove anything. Does that small program I've posted earlier crash on GNOME?

[regix]

The little application you posted ran fine on Gnome. It terminated like it should. My application also terminates but it shouldn't: after getting the color the program goes on ...
I had declared the signal in the subclass too. I commented this out but the same remark appears when I run the program.... and it still stops on GNOME...