Qt couting checked buttons made dynamically

Question

I am trying to count how many buttons have been checked

    void pracownik2::on_pushButton_4_clicked()
{

    this->setWindowTitle("EKRAN");
    QWidget *centralWidget = new QWidget;
            int licznik=1;
            QString licz;
            QString kolumny = ui->lineEdit->text();
            QString wiersze = ui->lineEdit_2->text();
            QPushButton *button[wiersze.toInt()][kolumny.toInt()];

            QGridLayout *controlsLayout = new QGridLayout;
            for(int i=0;i<wiersze.toInt();i++)
            {
                for(int j=0;j<kolumny.toInt();j++)
                {
                        licz = QString::number(licznik);
                        licznik++;
                        button[i][j] = new QPushButton(licz);
                        button[i][j]->setCheckable(1);
                        controlsLayout->addWidget(button[i][j], i, j);
                }
            }

            QPushButton *okej = new QPushButton("Zatwierdź");
            QPushButton *anul = new QPushButton("Anuluj");

            controlsLayout->addWidget(okej, wiersze.toInt(), 0);
            controlsLayout->addWidget(anul, wiersze.toInt(), 1);

            controlsLayout->setHorizontalSpacing(0);
            controlsLayout->setVerticalSpacing(0);
            centralWidget->setLayout(controlsLayout);

            setCentralWidget(centralWidget);



            for(int i=0;i<wiersze.toInt();i++)
            {
                for(int j=0;j<kolumny.toInt();j++)
                {
                        connect(button[i][j],SIGNAL(toggled(bool)),this,SLOT(tescik()));
                }
            }
            connect(anul,SIGNAL(clicked()),this,SLOT(close()));

            connect(okej,SIGNAL(clicked()),this,SLOT(okay2()));


}





    void pracownik2::tescik()
{

miejsca++;

}

    void pracownik2::okay2()
{

    QString m=QString::number(miejsca);
    QMessageBox::information(this,"elo","wybranych miejsc: " + m);
}

If i check buttons number 1,2,3 and press okay button it shows that 3 buttons have been checked BUT if I check button number 1 and uncheck it and press okay it shows that 2 buttons have been checked. How to make my variable increment only if I check button, not also when I uncheck it? I'm sorry for the code edit, just couldn't make it look better

You now have "increase count" in your code. Replace that with "if button was checked, then increase count, else decrease count". Or whatever you need to happen. — hyde, Jan 24 '15 at 10:43
but there's a function for increasing and i just can't put if(button->isChecked()==true) there because buttons are made dynamically — CentusDBWA, Jan 24 '15 at 10:45
`QPushButton` inherits this signal from `QAbstractButton`: http://doc.qt.io/qt-5/qabstractbutton.html#clicked — hyde, Jan 24 '15 at 10:48
I tried different SIGNALS, I mean clicked(), pressed(), released() and it didn't work — CentusDBWA, Jan 24 '15 at 10:50

score 0 · Accepted Answer · answered Jan 24 '15 at 11:08

The signal toggled has a boolean parameter, add it to your slot, and adjust count according to it. Change connect:

connect(button[i][j],SIGNAL(toggled(bool)),this,SLOT(tescik(bool)));

And change slot:

void pracownik2::tescik(bool t) {
    if (t) miejsca++;
    else miejsca--;
}

Qt couting checked buttons made dynamically

1 Answers1