Slider and SpinBox

#include <QtGui>

int main(int argc, char* argv[])
{
  QApplication app(argc, argv);

  QWidget* mainwindow = new QWidget();
  QVBoxLayout* mainlayout = new QVBoxLayout();

  QSlider* slider = new QSlider(Qt::Horizontal, mainwindow);
  slider->setRange(0, 100);

  QSpinBox* spinBox = new QSpinBox(mainwindow);
  spinBox->setRange(0, 100);


  mainlayout->addWidget(slider);
  mainlayout->addWidget(spinBox);

  mainwindow->setLayout(mainlayout);
  mainwindow->show();
  return app.exec();
}