出自《C++ GUI Qt 4 编程》第5页
- #include <QApplication>
- #include <QHBoxLayout>
- #include <QSlider>
- #include <QSpinBox>
- int main(int argc, char *argv[])
- {
- QApplication app(argc, argv);
- QWidget *window = new QWidget;
- window->setWindowTitle("Enter Your Age");
- QSpinBox *spinBox = new QSpinBox;
- QSlider *slider = new QSlider(Qt::Horizontal);
- spinBox->setRange(0, 130);
- slider->setRange(0, 130);
- QObject::connect(spinBox, SIGNAL(valueChanged(int)),
- slider, SLOT(setValue(int)));
- QObject::connect(slider, SIGNAL(valueChanged(int)),
- spinBox, SLOT(setValue(int)));
- spinBox->setValue(35);
- QHBoxLayout *layout = new QHBoxLayout;
- layout->addWidget(spinBox);
- layout->addWidget(slider);
- window->setLayout(layout);
- window->show();
- return app.exec();
- }
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