use_slider.cpp

linux系统下

#include <qapplication.h>
#include <qwidget.h>
#include <qslider.h>

class MyMainWindow : public QWidget
{
public:
    MyMainWindow();
    
private:
    QSlider *pSlider;
};

MyMainWindow::MyMainWindow()
{
    setGeometry(150, 150, 800, 600);
    
    pSlider = new QSlider(0, 100, 10, 50, Horizontal, this);
    pSlider->setGeometry(10, 15, 130, 20);
    pSlider->setTickmarks(QSlider::Below);
}

void main(int argc, char **argv)
{
    QApplication a(argc, argv);
    MyMainWindow w;
    a.setMainWidget(&w);
    w.show();
    a.exec();
    
}