QT 4-4

dialog.h    :

#ifndef DIALOG_H

#define DIALOG_H

#include <QDialog>

#include<QPushButton>

class Dialog : public QDialog

{

    Q_OBJECT

    QPushButton * pushButton1;

    QPushButton * pushButton2;

public:

    Dialog(QWidget *parent = 0);

    ~Dialog();

};

#endif // DIALOG_H

dialog.cpp    :

#include "dialog.h"

Dialog::Dialog(QWidget *parent)

    : QDialog(parent)

{

    resize(450,450);

    pushButton1=new QPushButton(this);

    pushButton1->setText("open");

    QIcon icon1(":/rc/open.ico");

    pushButton1->setIcon(icon1);

    pushButton1->setGeometry(30,30,70,70);

    pushButton1->setFlat(true);

    pushButton1->setCheckable(true);

}

Dialog::~Dialog()

{

}

main .cpp   :

#include "dialog.h"

#include <QApplication>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    Dialog w;

    w.show();

    return a.exec();

}