Open a window with a QAction in QToolBar

[gen_mass]

Hi,

I have a mainwindow with a toolbar. When the user clicks to a tool named DialogBox, I want my QWidget ''dialogue'' to open, so that the user can fill the questions ask in it. So, I tried to link the click signal of that tool to a slot (open_dialog()) where the coding of QWidget 'dialogue'' is,including a dialogue.show().
But that doesn't work...how can I do this ?

mainwindow::mainwindow(QWidget*p)
{
 
     QWidget *central= new QWidget(0);
........
...........
.........
    central->setLayout(layout);
 
    setCentralWidget(central);
 
 
    // Tool bar creation
        QToolBar *toolBarFichier = addToolBar("Fichier");
 
        QAction *actionQuitter = toolBarFichier->addAction("&Quit");
        toolBarFichier->addAction(actionQuitter);
        actionQuitter->setShortcut(QKeySequence("Ctrl+Q"));
        actionQuitter->setIcon(QIcon("quit.png"));
        connect(actionQuitter, SIGNAL(triggered()), qApp, SLOT(quit()));
 
       //Informations about patient
        QAction *actionDialogue = toolBarFichier->addAction("&Dialog box");
        toolBarFichier->addAction(actionDialogue);
        actionDialogue->setShortcut(QKeySequence("Ctrl+Q"));
        actionDialogue->setIcon(QIcon("file.png"));
        QObject::connect(actionDialogue, SIGNAL(triggered()), qApp, SLOT(open_dialog()));
 
 
}
 
void mainwindow::open_dialog()
{
    QWidget dialogue;
 
    QPalette pal = dialogue.palette(); 
    pal.setColor(dialogue.backgroundRole(),Qt::white);         
    dialogue.setPalette(pal);
 
    QLabel *intro = new QLabel("Informations relatives à la patiente");
    QFont *font1;
 
    QLabel *nameLabel = new QLabel("Nom:");
    QLineEdit *nameLineEdit = new QLineEdit;
 
    QLabel *prenomLabel = new QLabel("Prénom:");
    QLineEdit *prenomLineEdit = new QLineEdit;
 
    QLabel *ageLabel = new QLabel("Âge:");
    QLineEdit *ageLineEdit = new QLineEdit;
 
    QLabel *poidsLabel = new QLabel("Poids (kg):");
    QLineEdit *poidsLineEdit = new QLineEdit;
 
    QLabel *nbr_accLabel = new QLabel("Nombre d'accouchements vécus :");
    QLineEdit *nbr_accLineEdit = new QLineEdit;
 
 
    QPushButton *bouton1 = new QPushButton("Enregistrer ");
    QPushButton *bouton2 = new QPushButton("Terminer");
 
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(intro,0, 0);
    layout->addWidget(nameLabel, 2, 0);
    layout->addWidget(nameLineEdit, 2, 2,1,3);
    layout->addWidget(prenomLabel, 3, 0);
    layout->addWidget(prenomLineEdit, 3,2, 1,3);
    layout->addWidget(ageLabel, 4, 0);
    layout->addWidget(ageLineEdit, 4, 2);
    layout->addWidget(poidsLabel, 5, 0);
    layout->addWidget(poidsLineEdit, 5, 2);
    layout->addWidget(nbr_accLabel, 6, 0);
    layout->addWidget(nbr_accLineEdit, 6, 2);
    layout->addWidget(bouton1, 8, 3);
    layout->addWidget(bouton2, 8, 4);
 
    dialogue.setLayout(layout);
 
 
    dialogue.show();
 
}

mainwindow::mainwindow(QWidget*p)
{

     QWidget *central= new QWidget(0);
........
...........
.........
    central->setLayout(layout);

    setCentralWidget(central);


    // Tool bar creation
        QToolBar *toolBarFichier = addToolBar("Fichier");

        QAction *actionQuitter = toolBarFichier->addAction("&Quit");
        toolBarFichier->addAction(actionQuitter);
        actionQuitter->setShortcut(QKeySequence("Ctrl+Q"));
        actionQuitter->setIcon(QIcon("quit.png"));
        connect(actionQuitter, SIGNAL(triggered()), qApp, SLOT(quit()));

       //Informations about patient
        QAction *actionDialogue = toolBarFichier->addAction("&Dialog box");
        toolBarFichier->addAction(actionDialogue);
        actionDialogue->setShortcut(QKeySequence("Ctrl+Q"));
        actionDialogue->setIcon(QIcon("file.png"));
        QObject::connect(actionDialogue, SIGNAL(triggered()), qApp, SLOT(open_dialog()));


}

void mainwindow::open_dialog()
{
    QWidget dialogue;

    QPalette pal = dialogue.palette(); 
    pal.setColor(dialogue.backgroundRole(),Qt::white);         
    dialogue.setPalette(pal);

    QLabel *intro = new QLabel("Informations relatives à la patiente");
    QFont *font1;

    QLabel *nameLabel = new QLabel("Nom:");
    QLineEdit *nameLineEdit = new QLineEdit;

    QLabel *prenomLabel = new QLabel("Prénom:");
    QLineEdit *prenomLineEdit = new QLineEdit;

    QLabel *ageLabel = new QLabel("Âge:");
    QLineEdit *ageLineEdit = new QLineEdit;

    QLabel *poidsLabel = new QLabel("Poids (kg):");
    QLineEdit *poidsLineEdit = new QLineEdit;

    QLabel *nbr_accLabel = new QLabel("Nombre d'accouchements vécus :");
    QLineEdit *nbr_accLineEdit = new QLineEdit;


    QPushButton *bouton1 = new QPushButton("Enregistrer ");
    QPushButton *bouton2 = new QPushButton("Terminer");

    QGridLayout *layout = new QGridLayout;
    layout->addWidget(intro,0, 0);
    layout->addWidget(nameLabel, 2, 0);
    layout->addWidget(nameLineEdit, 2, 2,1,3);
    layout->addWidget(prenomLabel, 3, 0);
    layout->addWidget(prenomLineEdit, 3,2, 1,3);
    layout->addWidget(ageLabel, 4, 0);
    layout->addWidget(ageLineEdit, 4, 2);
    layout->addWidget(poidsLabel, 5, 0);
    layout->addWidget(poidsLineEdit, 5, 2);
    layout->addWidget(nbr_accLabel, 6, 0);
    layout->addWidget(nbr_accLineEdit, 6, 2);
    layout->addWidget(bouton1, 8, 3);
    layout->addWidget(bouton2, 8, 4);

    dialogue.setLayout(layout);


    dialogue.show();

}

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Thanks for your helps !

[Lykurg]

It is a slot of your mainwindow and not of the application! Use

QObject::connect(actionDialogue, SIGNAL(triggered()), this, SLOT(open_dialog()));

QObject::connect(actionDialogue, SIGNAL(triggered()), this, SLOT(open_dialog()));

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Also make sure you have declared open_dialog as a slot.

[Zlatomir]

Aren't you get some errors that the slot doesn't exist?

I think is because of this line:

//QObject::connect(actionDialogue, SIGNAL(triggered()), qApp, SLOT(open_dialog()));
//should be:
QObject::connect(actionDialogue, SIGNAL(triggered()), this, SLOT(open_dialog()));
//as i see from your code the open_dialog slot is member of MainWindow

//QObject::connect(actionDialogue, SIGNAL(triggered()), qApp, SLOT(open_dialog()));
//should be:
QObject::connect(actionDialogue, SIGNAL(triggered()), this, SLOT(open_dialog()));
//as i see from your code the open_dialog slot is member of MainWindow

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And also:

void mainwindow::open_dialog()
{
    //QWidget dialogue; //you might want to allocate dynamically and pass this pointer as a parent
    //something like this:
    QWidget *dialogue = new QWidget(this);
    //or even use the QDialog class:  QDialog *dialogue = new QDialog(this);
//...

void mainwindow::open_dialog()
{
    //QWidget dialogue; //you might want to allocate dynamically and pass this pointer as a parent
    //something like this:
    QWidget *dialogue = new QWidget(this);
    //or even use the QDialog class:  QDialog *dialogue = new QDialog(this);
//...

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[gen_mass]

oops right!!
thanks !!

I still have a little problem ....on my QDialog widget (I used the QDialog class instead of just QWidget, as proposed by Zlatomir)
I have a button to close it with the connection of the quit slot, but when I use it, my mainwindow closes at the same time, and I only want the QDialog widget to close...

void mainwindow::ouvrir_dialogue()
{
    QDialog *dialogue = new QDialog(this);
    dialogue->setModal(true);
    QPalette pal = dialogue->palette(); 
    pal.setColor(dialogue->backgroundRole(),Qt::white);         
    dialogue->setPalette(pal);
 
.......................
.........................
 
    QPushButton *bouton1 = new QPushButton("Enregistrer ");
    QPushButton *bouton2 = new QPushButton("Terminer");
 
    ...........................
 
    dialogue->show();
 
     QObject::connect(bouton1, SIGNAL(clicked()), this, SLOT(save()));
     QObject::connect(bouton2, SIGNAL(clicked()), qApp, SLOT(quit())); 
 
}

void mainwindow::ouvrir_dialogue()
{
    QDialog *dialogue = new QDialog(this);
    dialogue->setModal(true);
    QPalette pal = dialogue->palette(); 
    pal.setColor(dialogue->backgroundRole(),Qt::white);         
    dialogue->setPalette(pal);

.......................
.........................

    QPushButton *bouton1 = new QPushButton("Enregistrer ");
    QPushButton *bouton2 = new QPushButton("Terminer");

    ...........................

    dialogue->show();

     QObject::connect(bouton1, SIGNAL(clicked()), this, SLOT(save()));
     QObject::connect(bouton2, SIGNAL(clicked()), qApp, SLOT(quit())); 

}

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[Zlatomir]

Try like this:

QObject::connect(bouton2, SIGNAL(clicked()), dialogue, SLOT(quit()));

QObject::connect(bouton2, SIGNAL(clicked()), dialogue, SLOT(quit()));

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LE: You need to connect the Sender (Object), sender Signal, receiver (object) here don't just use the application object, and receiver Slot()