Runtime Error on 32bits...

dcbasso

This prolem occours when I run with Root!

If I use the sudo ./MyApplication, this error appears to me:

@
WARNING: Phonon needs QCoreApplication::applicationName to be set to export audio output names through the DBUS interface
@

I don't use any kind od "audio"... not in my code!

guziemic

With high probability it is used by WebKit to handle audio or video tags in HTML5. If you set application name does this problem ends?

dcbasso

How to set "application name"?

KA51O

the "documentation":http://qt-project.org/doc/qt-4.8/qcoreapplication.html#applicationName-prop is your friend, use it.

dcbasso

Nothing change...
The error still there!

KA51O

What exactly did you change in your code and what is the resulting error. You have to tell and do a little more if you want people to help you.

dcbasso

KA510... I don't change anything between Compilations...
The problems is all showed above, the errors still the same!

I change the main.cpp, now is:

@
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
a.setApplicationName( "Balança Embarcada Veicular - Sistema Assistência Técnica" );
a.setApplicationVersion( "1.0" );
a.setOrganizationDomain( "none" );
a.setOrganizationName( "Inove Tecnologia" );
setlocale( QApplication::UnicodeUTF8, "C" );
MainWindow w;
w.show();
return a.exec();
}
@

dcbasso

The source code of screen that shows the error on 32bits:

UI:
@
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>WidgetSVG</class>
<widget class="QWidget" name="WidgetSVG">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="minimumSize">
<size>
<width>400</width>
<height>300</height>
</size>
</property>
<property name="windowTitle">
<string>Form</string>
</property>
<property name="styleSheet">
<string notr="true">background-color: rgb(145, 145, 145)</string>
</property>
<layout class="QHBoxLayout" name="horizontalLayout">
<property name="spacing">
<number>5</number>
</property>
<property name="margin">
<number>5</number>
</property>
<item>
<widget class="QWebView" name="webView">
<property name="autoFillBackground">
<bool>false</bool>
</property>
<property name="url">
<url>
<string>about:blank</string>
</url>
</property>
</widget>
</item>
<item>
<widget class="QGroupBox" name="groupBox">
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="title">
<string>Detalhes:</string>
</property>
<property name="alignment">
<set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
</property>
<property name="flat">
<bool>true</bool>
</property>
<layout class="QVBoxLayout" name="verticalLayout_2">
<property name="spacing">
<number>3</number>
</property>
<property name="margin">
<number>5</number>
</property>
<item>
<widget class="QLabel" name="lbClasse">
<property name="text">
<string>Classe:</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="lbCodigo">
<property name="text">
<string>Código:</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="lbGrupo">
<property name="text">
<string>Grupo:</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="lbNumeroEixos">
<property name="text">
<string>Número de Eixos:</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="lbCargaMaxima">
<property name="text">
<string>Carga Máx.:</string>
</property>
</widget>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>40</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="btSelecionar">
<property name="text">
<string>Selecionar Veículo</string>
</property>
</widget>
</item>
</layout>
</widget>
</item>
</layout>
</widget>
<customwidgets>
<customwidget>
<class>QWebView</class>
<extends>QWidget</extends>
<header>QtWebKit/QWebView</header>
</customwidget>
</customwidgets>
<resources/>
<connections/>
</ui>
@

dcbasso

The source code of screen that shows the error on 32bits:

cpp
@
#include "widgetsvg.h"
#include "ui_widgetsvg.h"

#include <QWebFrame>
#include "QtCore/QDebug"

WidgetSVG::WidgetSVG(QWidget *parent) :
QWidget(parent),
ui(new Ui::WidgetSVG)
{
ui->setupUi(this);
ui->webView->setContextMenuPolicy(Qt::CustomContextMenu);
ui->webView->setEnabled(false);
}
WidgetSVG::WidgetSVG(Veiculo *newVeiculo, QWidget *parent):
QWidget(parent),
ui(new Ui::WidgetSVG)
{
ui->setupUi(this);
ui->webView->setContextMenuPolicy(Qt::CustomContextMenu);
ui->webView->setEnabled(false);
setVeiculo( newVeiculo );
installEventFilter(this);
}
WidgetSVG::~WidgetSVG()
{
delete ui;
}
void WidgetSVG::setVeiculo(Veiculo newVeiculo)
{
this->veiculo = newVeiculo;
ui->webView->setUrl( getVeiculo()->getFileUrl() );
loadScreenData();
}
Veiculo WidgetSVG::getVeiculo()
{
return this->veiculo;
}
void WidgetSVG::adjust()
{
QString url = ui->webView->url().toString().remove(0, 7);
renderer = new QSvgRenderer(url);
ui->webView->setZoomFactor( getFactor() );
}
void WidgetSVG::clicked(int codigo)
{
eixoSelecionado( codigo );
}
int WidgetSVG::getComponentWidth()
{
return ui->webView->size().width();
}
int WidgetSVG::getSVGWidth()
{
return renderer->defaultSize().width();
}
double WidgetSVG::getSVGRatio()
{
return (double) renderer->defaultSize().height() / renderer->defaultSize().width();
}
double WidgetSVG::getFactor()
{
return (double) getComponentWidth() / getSVGWidth();
}
void WidgetSVG::loadScreenData()
{
ui->lbClasse->setText( ui->lbClasse->text() + " " + getVeiculo()->getClasse() );
ui->lbCodigo->setText( ui->lbCodigo->text() + " " + QString::number(getVeiculo()->getCodigo()) );
ui->lbGrupo->setText( ui->lbGrupo->text() + " " + QString::number(getVeiculo()->getGrupo()) );
ui->lbNumeroEixos->setText( ui->lbNumeroEixos->text() + " " + QString::number(getVeiculo()->getNumeroEixos()) );
ui->lbCargaMaxima->setText( ui->lbCargaMaxima->text() + " " +QString::number(getVeiculo()->getPBT()) + " Ton." );
}
bool WidgetSVG::eventFilter(QObject *obj, QEvent *event)
{
bool retorno = false;
if (event->type() == QEvent::Resize)
{
adjust();
retorno = true;
} else {
ui->webView->page()->mainFrame()->addToJavaScriptWindowObject("sender", this);
retorno = QWidget::eventFilter(obj, event);
}
return retorno;
}

void WidgetSVG::on_btSelecionar_clicked()
{
emit veiculoSelecionado(getVeiculo());
emit selected();
this->setStyleSheet("background-color: rgb(138, 121, 35);");
ui->webView->setEnabled(true);
}
void WidgetSVG::setUnselected()
{
this->setStyleSheet("background-color: rgb(145, 145, 145);");
ui->webView->setEnabled(false);
}
@

dcbasso

I try this too:

@
#include <QtGui/QApplication>
#include "QtCore/QtDebug"
#include "mainwindow.h"

int main(int argc, char *argv[])
{
QString appName = "Balança Embarcada Veicular - Sistema Assistência Técnica";
QString appVersion = "1.0";
QString orgName = "Inove Tecnologia";
QString orgDomain = "http://inovetecnologia.com.br/";
QApplication::setApplicationName( appName );
QApplication::setApplicationVersion( appVersion );
QApplication::setOrganizationName( orgName );
QApplication::setOrganizationDomain( orgDomain );
QCoreApplication::setApplicationName( appName );
QCoreApplication::setApplicationVersion( appVersion );
QCoreApplication::setOrganizationDomain( orgDomain );
QCoreApplication::setOrganizationName( orgName );
QApplication a(argc, argv);
a.setApplicationName( appName );
a.setApplicationVersion( appVersion );
a.setOrganizationDomain( orgDomain );
a.setOrganizationName( orgName );
setlocale( QApplication::UnicodeUTF8, "C" );
MainWindow w;
w.show();
return a.exec();
}
@

Still got problems...
This problems could be from lib's?
The 64bits I using OpenSuse to Compile, And 32bits I'm using Ubuntu 32bits (VMware)!

dcbasso

Well, I install OpenSuse 32bits (with KDE)
Install QT, Compile on then and run...
The errors appears, but the application works as needed:

@
klauncher(26995) kdemain: No DBUS session-bus found. Check if you have started the DBUS server.
kdeinit4: Communication error with launcher. Exiting!
BalanÃÂ§a Embarcada Veicular - Sistema AssistÃÂªncia TÃÂ©cnica(26948): No ksycoca4 database available!

BalanÃÂ§a Embarcada Veicular - Sistema AssistÃÂªncia TÃÂ©cnica(26948)/kdecore (trader) KServiceTypeTrader::defaultOffers: KServiceTypeTrader: serviceType "PhononBackend" not found
@

Appears to be something with Ubuntu or maybe the gnome 32bits.