Slider가 움직이는대로 ProgressBar움직이게 하기

Slider가 움직이는대로 ProgressBar움직이게 하기

#include "widget.h" #include <QApplication> #include <QSlider> #include <QProgressBar> int main(int argc, char *argv[]) { QApplication a(argc, argv); QWidget* w=new QWidget(0); //make slider QSlider *sl=new QSlider(Qt::Horizontal,w); sl->setTickPosition(QSlider::TicksAbove); sl->setRange(0,100); sl->setValue(20); sl->resize(200,30); //set location sl->move(5,5); //make progressbar QProgressBar* pb=new QProgressBar(w); pb->setRange(0,100); pb->setValue(20); pb->resize(200,30); //set location pb->move(5,50); //make connection between signal and slot //when sl(slider) sends a SIGNAL(valueChanged) pb receives and do SLOT(setValue) QObject::connect(sl,SIGNAL(valueChanged(int)),pb,SLOT(setValue(int))); w->show(); return a.exec(); }