Russian Qt Forum

#ifndef PROCESSOR_H
#define PROCESSOR_H

#include <QWidget>

class Processor : public QWidget
{
    Q_OBJECT

public:
    Processor(QWidget *parent = 0);

private slots:
    void alert();
};

#endif // PROCESSOR_H

#include "processor.h"
#include <QtDebug>
#include <QtGui>
Processor::Processor(QWidget *parent):
    QWidget(parent)
{
}

void Processor::alert()
{
    qDebug() << "alert!!";
}

#include <QApplication>
#include "mainwindow.h"
#include "processor.h"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    Processor proc1;
    return a.exec();
}

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT
    
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    
public:
    Ui::MainWindow *ui;
};

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

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

MainWindow::~MainWindow()
{
    delete ui;
}