How to fix Undefined reference to…slot in MainWindow?

Question

Qt

I'm trying to get the QTextEdit widgets in the stackedWidget to send textChanged() signals to the MainWindow slot. I still can't understand if it works at all, because it gives a compilation error: undefined reference to MainWindow::on_stackedWidget_itemChanged(). "Clear project" and the assembly clicked, does not help.

mainwindow.h

//
    private slots:
    void on_stackedWidget_itemChanged();
    //

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{ui->setupUi(this);
QTextEdit *Text = new QTextEdit;
ui->stackedWidget->insertWidget(0, Text);
connect(Text, SIGNAL(textChanged()), this, SLOT(on_stackedWidget_itemChanged()));
//
}
///
void on_stackedWidget_itemChanged()
{
    qDebug()<<"Nice";
}

Answer 1

Stupid mistake, I forgot to write MainWindow:: when defining the method.