#include
#include
#include
#include
#include
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QWidgetwindow;
QVBoxLayout* mainLayout = new QVBoxLayout(&window);
QLabel* label = new QLabel("0");
QSpinBox* spinBox =new QSpinBox;
QSlider* slider = new QSlider(Qt::Horizontal);
mainLayout->addWidget(label);
mainLayout->addWidget(spinBox);
mainLayout->addWidget(slider);
QObject::connect(spinBox, SIGNAL(valueChanged(int)),label, SLOT(setNum(int)));
QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
QObject::connect(slider, SIGNAL(valueChanged(int)),label, SLOT(setNum(int)));
QObject::connect(slider, SIGNAL(valueChanged(int)),spinBox, SLOT(setValue(int)));
window.show();
return a.exec();
}