Qt Designer closes when trying to add a custom widget into a form

**yellowmat** · 6th February 2006, 10:24

Hi,

This mornig I tried to add a custom widget of mine into a dialog form and each time it makes qt designer close. I don't know why.

My widget is quite simple and is composed of 5 bitmaps.

Here is the code of the .h of my widget

Qt Code:

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#ifndef _HMI_ITEM_SOUND_TESTER_H
#define _HMI_ITEM_SOUND_TESTER_H
 
#include <qwidget.h>
 
class CHmiItemSound;
class QLabel;
 
class CHmiItemSoundTester : public QWidget
{
	// Constructor / Desctuctor
public:
	CHmiItemSoundTester(QWidget* parent=0, const char* name=0);
 
	// Functions
	void updateItem(const CHmiItemSound&);
	void showItem();
	void hideItem();
	void testItem();
 
	// Members
private:
	CHmiItemSound* itemSound;
 
	QLabel* car;
	QLabel* hpAvGa;
	QLabel* hpAvDr;
	QLabel* hpArGa;
	QLabel* hpArDr;
};
 
#endif

#ifndef _HMI_ITEM_SOUND_TESTER_H
#define _HMI_ITEM_SOUND_TESTER_H

#include <qwidget.h>

class CHmiItemSound;
class QLabel;

class CHmiItemSoundTester : public QWidget
{
	// Constructor / Desctuctor
public:
	CHmiItemSoundTester(QWidget* parent=0, const char* name=0);

	// Functions
	void updateItem(const CHmiItemSound&);
	void showItem();
	void hideItem();
	void testItem();

	// Members
private:
	CHmiItemSound* itemSound;

	QLabel* car;
	QLabel* hpAvGa;
	QLabel* hpAvDr;
	QLabel* hpArGa;
	QLabel* hpArDr;
};

#endif

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... the .cpp

Qt Code:

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#include "HmiItemSoundTester.h"
#include <qlabel.h>
#include <qpixmap.h>
#include ".\\..\\..\\HmiItemSound\\WidgetSource\\HmiItemSound.h"
#include <qsound.h>
 
CHmiItemSoundTester::CHmiItemSoundTester(QWidget* parent, const char* name):
QWidget()
{
	// Construct the CHmiItemSound
	itemSound = new CHmiItemSound();
 
	// Construct the representation of a sound item
	resize(228, 396);
	// ... the background bitmap
	voiture = new QLabel(this, "voiture");
	voiture->setGeometry(0, 0, 228, 396);
	voiture->setPixmap( QPixmap("1007.png") );
	//voiture->hide();
 
	// ... the the hp bitmaps
	hpAvGa = new QLabel(this, "hpAvGa");
	hpAvGa->setGeometry(30, 93, 69, 93);
	hpAvGa->setPixmap( QPixmap("speaker_left.png") );
	//hpAvGa->hide();
 
	hpAvDr = new QLabel(this, "hpAvDr");
	hpAvDr->setGeometry(125, 93, 69, 93);
	hpAvDr->setPixmap( QPixmap("speaker_right.png") );
	//hpAvDr->hide();
 
	hpArGa = new QLabel(this, "hpArGa");
	hpArGa->setGeometry(30, 221, 69, 93);
	hpArGa->setPixmap( QPixmap("speaker_left.png") );
	//hpArGa->hide();
 
	hpArDr = new QLabel(this, "hpArDr");
	hpArDr->setGeometry(125, 221, 69, 93);
	hpArDr->setPixmap( QPixmap("speaker_right.png") );
	//hpArDr->hide();
}
 
 
void CHmiItemSoundTester::updateItem(const CHmiItemSound& value)
{
	itemSound->setSoundFileName(					value.getSoundFileName()					);
	itemSound->setSoundDuration(					value.getSoundDuration()					);
	itemSound->setSoundLevel(						value.getSoundLevel()						);
	itemSound->setSoundPlayMode(					value.getSoundPlayMode()					);
	itemSound->setSoundRestitutionModeHpFrontLeft(	value.getSoundRestitutionModeHpFrontLeft()	);
	itemSound->setSoundRestitutionModeHpFrontRight( value.getSoundRestitutionModeHpFrontRight() );
	itemSound->setSoundRestitutionModeHpRearLeft(	value.getSoundRestitutionModeHpRearLeft()	);
	itemSound->setSoundRestitutionModeHpRearRight(	value.getSoundRestitutionModeHpRearRight()	);
}
 
 
void CHmiItemSoundTester::showItem()
{
	voiture->show();
 
	if( itemSound->getSoundRestitutionModeHpFrontLeft() )
		hpAvGa->show();
	else
		hpAvGa->hide();
 
	if( itemSound->getSoundRestitutionModeHpFrontRight() )
		hpAvDr->show();
	else
		hpAvDr->hide();
 
	if( itemSound->getSoundRestitutionModeHpRearLeft() )
		hpArGa->show();
	else
		hpArGa->hide();
 
	if( itemSound->getSoundRestitutionModeHpRearRight() )
		hpArDr->show();
	else
		hpArDr->hide();
 
}
 
 
void CHmiItemSoundTester::hideItem()
{
	voiture->hide();
	hpAvGa->hide();
	hpAvDr->hide();
	hpArGa->hide();
	hpArDr->hide();
}
 
 
void CHmiItemSoundTester::testItem()
{
	QSound sound(itemSound->getSoundFileName());
 
	sound.play();
}

#include "HmiItemSoundTester.h"
#include <qlabel.h>
#include <qpixmap.h>
#include ".\\..\\..\\HmiItemSound\\WidgetSource\\HmiItemSound.h"
#include <qsound.h>

CHmiItemSoundTester::CHmiItemSoundTester(QWidget* parent, const char* name):
QWidget()
{
	// Construct the CHmiItemSound
	itemSound = new CHmiItemSound();

	// Construct the representation of a sound item
	resize(228, 396);
	// ... the background bitmap
	voiture = new QLabel(this, "voiture");
	voiture->setGeometry(0, 0, 228, 396);
	voiture->setPixmap( QPixmap("1007.png") );
	//voiture->hide();

	// ... the the hp bitmaps
	hpAvGa = new QLabel(this, "hpAvGa");
	hpAvGa->setGeometry(30, 93, 69, 93);
	hpAvGa->setPixmap( QPixmap("speaker_left.png") );
	//hpAvGa->hide();

	hpAvDr = new QLabel(this, "hpAvDr");
	hpAvDr->setGeometry(125, 93, 69, 93);
	hpAvDr->setPixmap( QPixmap("speaker_right.png") );
	//hpAvDr->hide();

	hpArGa = new QLabel(this, "hpArGa");
	hpArGa->setGeometry(30, 221, 69, 93);
	hpArGa->setPixmap( QPixmap("speaker_left.png") );
	//hpArGa->hide();

	hpArDr = new QLabel(this, "hpArDr");
	hpArDr->setGeometry(125, 221, 69, 93);
	hpArDr->setPixmap( QPixmap("speaker_right.png") );
	//hpArDr->hide();
}


void CHmiItemSoundTester::updateItem(const CHmiItemSound& value)
{
	itemSound->setSoundFileName(					value.getSoundFileName()					);
	itemSound->setSoundDuration(					value.getSoundDuration()					);
	itemSound->setSoundLevel(						value.getSoundLevel()						);
	itemSound->setSoundPlayMode(					value.getSoundPlayMode()					);
	itemSound->setSoundRestitutionModeHpFrontLeft(	value.getSoundRestitutionModeHpFrontLeft()	);
	itemSound->setSoundRestitutionModeHpFrontRight( value.getSoundRestitutionModeHpFrontRight() );
	itemSound->setSoundRestitutionModeHpRearLeft(	value.getSoundRestitutionModeHpRearLeft()	);
	itemSound->setSoundRestitutionModeHpRearRight(	value.getSoundRestitutionModeHpRearRight()	);
}


void CHmiItemSoundTester::showItem()
{
	voiture->show();

	if( itemSound->getSoundRestitutionModeHpFrontLeft() )
		hpAvGa->show();
	else
		hpAvGa->hide();

	if( itemSound->getSoundRestitutionModeHpFrontRight() )
		hpAvDr->show();
	else
		hpAvDr->hide();

	if( itemSound->getSoundRestitutionModeHpRearLeft() )
		hpArGa->show();
	else
		hpArGa->hide();

	if( itemSound->getSoundRestitutionModeHpRearRight() )
		hpArDr->show();
	else
		hpArDr->hide();

}


void CHmiItemSoundTester::hideItem()
{
	voiture->hide();
	hpAvGa->hide();
	hpAvDr->hide();
	hpArGa->hide();
	hpArDr->hide();
}


void CHmiItemSoundTester::testItem()
{
	QSound sound(itemSound->getSoundFileName());

	sound.play();
}

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The .h code of my plugin

Qt Code:

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#include <qwidgetplugin.h>
#include <qwidget.h>
 
class QT_WIDGET_PLUGIN_EXPORT CHmiItemSoundTesterPlugin : public QWidgetPlugin
{
public:
	CHmiItemSoundTesterPlugin();
 
	QStringList keys() const;
	QWidget* create(const QString& classname, QWidget* parent=0, const char* name=0);
	QString group(const QString&) const;
	QIconSet iconSet(const QString&) const;
	QString includeFile(const QString&) const;
	QString toolTip(const QString&) const;
	QString whatsThis(const QString&) const;
	bool isContainer(const QString&) const;
};

#include <qwidgetplugin.h>
#include <qwidget.h>

class QT_WIDGET_PLUGIN_EXPORT CHmiItemSoundTesterPlugin : public QWidgetPlugin
{
public:
	CHmiItemSoundTesterPlugin();

	QStringList keys() const;
	QWidget* create(const QString& classname, QWidget* parent=0, const char* name=0);
	QString group(const QString&) const;
	QIconSet iconSet(const QString&) const;
	QString includeFile(const QString&) const;
	QString toolTip(const QString&) const;
	QString whatsThis(const QString&) const;
	bool isContainer(const QString&) const;
};

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... the .cpp

Qt Code:

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#include "HmiItemSoundTesterPlugin.h"
#include ".\\..\\WidgetSource\\HmiItemSoundTester.h"
 
CHmiItemSoundTesterPlugin::CHmiItemSoundTesterPlugin()
:QWidgetPlugin()
{
 
}
 
QStringList CHmiItemSoundTesterPlugin::keys() const
{
	QStringList list;
	list << "CHmiItemSoundTesterPlugin";
	return list;
}
 
QWidget* CHmiItemSoundTesterPlugin::create(const QString& key, QWidget* parent, const char* name)
{
	if( key == "CHmiItemSoundTesterPlugin" )
		return new CHmiItemSoundTester(parent, name);
	return 0;
}
 
QString CHmiItemSoundTesterPlugin::includeFile(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "HmiItemSoundTester.h";
	return QString::null;
}
 
QString CHmiItemSoundTesterPlugin::group(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "MyWidgets";
	return QString::null;
}
 
QIconSet CHmiItemSoundTesterPlugin::iconSet(const QString& feature) const
{
	return QIconSet( QPixmap("hmiitemsoundtester_pixmap.png"));
}
 
QString CHmiItemSoundTesterPlugin::toolTip(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "Sound Tester Widget";
	return QString::null;
}
 
QString CHmiItemSoundTesterPlugin::whatsThis(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "A widget to test a sound";
	return QString::null;
}
 
bool CHmiItemSoundTesterPlugin::isContainer(const QString& feature) const
{
	return FALSE;
}
 
Q_EXPORT_PLUGIN( CHmiItemSoundTesterPlugin );

#include "HmiItemSoundTesterPlugin.h"
#include ".\\..\\WidgetSource\\HmiItemSoundTester.h"

CHmiItemSoundTesterPlugin::CHmiItemSoundTesterPlugin()
:QWidgetPlugin()
{

}

QStringList CHmiItemSoundTesterPlugin::keys() const
{
	QStringList list;
	list << "CHmiItemSoundTesterPlugin";
	return list;
}

QWidget* CHmiItemSoundTesterPlugin::create(const QString& key, QWidget* parent, const char* name)
{
	if( key == "CHmiItemSoundTesterPlugin" )
		return new CHmiItemSoundTester(parent, name);
	return 0;
}

QString CHmiItemSoundTesterPlugin::includeFile(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "HmiItemSoundTester.h";
	return QString::null;
}

QString CHmiItemSoundTesterPlugin::group(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "MyWidgets";
	return QString::null;
}

QIconSet CHmiItemSoundTesterPlugin::iconSet(const QString& feature) const
{
	return QIconSet( QPixmap("hmiitemsoundtester_pixmap.png"));
}

QString CHmiItemSoundTesterPlugin::toolTip(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "Sound Tester Widget";
	return QString::null;
}

QString CHmiItemSoundTesterPlugin::whatsThis(const QString& feature) const
{
	if( feature == "CHmiItemSoundTesterPlugin" )
		return "A widget to test a sound";
	return QString::null;
}

bool CHmiItemSoundTesterPlugin::isContainer(const QString& feature) const
{
	return FALSE;
}

Q_EXPORT_PLUGIN( CHmiItemSoundTesterPlugin );

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... then the .pro file of my widget

Qt Code:

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######################################################################
# Automatically generated by qmake (1.07a) dim. 29. janv. 10:37:16 2006
######################################################################
 
SOURCES += HmiItemSoundTesterPlugin.cpp ../WidgetSource/HmiItemSoundTester.cpp ../../HmiItem/WidgetSource/HmiItem.cpp ../../HmiItemSound/WidgetSource/HmiItemSound.cpp
HEADERS += HmiItemSoundTesterPlugin.h ../WidgetSource/HmiItemSoundTester.h ../../HmiItem/WidgetSource/HmiItem.h ../../HmiItemSound/WidgetSource/HmiItemSound.h
DESTDIR = $(QTDIR)/plugins/designer
TARGET = hmiitemsoundtesterplugin
 
target.path = $$plugins.path
isEmpty(target.path):target.path==$$QT_PREFIX/plugins
INSTALLS += target
TEMPLATE = lib
CONFIG += qt warn_on release plugin
INCLUDEPATH += $(QTDIR)/tools/designer/interfaces
DBFILE = plugin.db
PROJECTNAME = Plugin
LANGUAGE = C++

######################################################################
# Automatically generated by qmake (1.07a) dim. 29. janv. 10:37:16 2006
######################################################################

SOURCES += HmiItemSoundTesterPlugin.cpp ../WidgetSource/HmiItemSoundTester.cpp ../../HmiItem/WidgetSource/HmiItem.cpp ../../HmiItemSound/WidgetSource/HmiItemSound.cpp
HEADERS += HmiItemSoundTesterPlugin.h ../WidgetSource/HmiItemSoundTester.h ../../HmiItem/WidgetSource/HmiItem.h ../../HmiItemSound/WidgetSource/HmiItemSound.h
DESTDIR = $(QTDIR)/plugins/designer
TARGET = hmiitemsoundtesterplugin

target.path = $$plugins.path
isEmpty(target.path):target.path==$$QT_PREFIX/plugins
INSTALLS += target
TEMPLATE = lib
CONFIG += qt warn_on release plugin
INCLUDEPATH += $(QTDIR)/tools/designer/interfaces
DBFILE = plugin.db
PROJECTNAME = Plugin
LANGUAGE = C++

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If someone knows what's wrong or had the same problem.

Thanks in advance

**yellowmat** · 6th February 2006, 12:24

... I got it !

I did not pass parent widget and widget name parameters to the base class of CHmiItemSoundtester (QWidget)

So that is why the compilation was ok but the insertion of my widget failed.

[SOLVED]

**yellowmat** · 6th February 2006, 12:50

hmm ... in fact I still have a problem with my widget. When I had it to a form, it appears to be a QWidget object and not a CHmiItemSoundTester object.

Why ?

**yellowmat** · 6th February 2006, 12:59

about the last problem I mentionned, I replaced some functions by same slots, I compile it and then when I insert my widget into a form it appears to be a CHmiItemSoundTester and not a base class object.

Finally I have a last question. As my widget uses some bitmaps which are external to it, where do I must store them to make my widget be able to display them ?

**jacek** · 6th February 2006, 14:30

Originally Posted by yellowmat

it appears to be a QWidget object and not a CHmiItemSoundTester object.

Why ?

Because you forgot to add Q_OBJECT macro:

Qt Code:

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class CHmiItemSoundTester : public QWidget
{
    Q_OBJECT
    // Constructor / Desctuctor
public:
    CHmiItemSoundTester(QWidget* parent=0, const char* name=0);

class CHmiItemSoundTester : public QWidget
{
    Q_OBJECT
    // Constructor / Desctuctor
public:
    CHmiItemSoundTester(QWidget* parent=0, const char* name=0);

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Originally Posted by yellowmat

where do I must store them to make my widget be able to display them ?

You could place them in an image collection. Check qmake docs (look for IMAGES variable).

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