Question

I have a text editor like program which is a QMainWindow inherited class. There, when I click Find, the connection,

connect(actionFind,SIGNAL(triggered()),this,SLOT(actionFindTriggered()));

Activates. And the defination of that function is

void    MainWindow::actionFindTriggered() {
    new Find(this);
}

My Find class is

class Find : public QDialog, public Ui::Dialog
{
public:
    Find(QWidget *parent=0);

private:
    Ui::Dialog *ui;

public slots:
    void    buttonFindTriggered();
};

And the definition is

Find::Find(QWidget *parent)
    : QDialog(parent)
{
    ui = new Ui::Dialog;
    ui->setupUi(this);
    show();
    this->

    connect(ui->buttonClose, SIGNAL(clicked()), this, SLOT(close()));
    connect(ui->buttonFind, SIGNAL(clicked()), this, SLOT(buttonFindTrigddgered()));
}

void    Find::buttonFindTriggered() {
    qDebug() << "FIND ACTIVATED";
}

What is the problem

When I clicked find from the main window, find window works successfully but could not make the connection. And I get the following msg on console,

Object::connect: No such slot QDialog::buttonFindTriggered() // Edited
Object::connect:  (sender name:   'buttonFind')
Object::connect:  (receiver name: 'Dialog')

Edited due to a typo…!

Answer 1

You forgot the Q_OBJECT macro.

Also – consider using this notation for getting slot auto-connection (setupUI will automatically connect these slot for you).

void on_buttonFind_clicked();
void on_buttonClose_clicked();