[提问]slider与spinbox问题 [复制链接]

QSpinBox *spinBox=new QSpinBox;
QSlider *slider =new QSlider;
spinBox->setRange(0,20);
slider->setRange(0,20);
QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
QObject::connect(slider, SIGNAL(valueChanged(int)),spinBox, SLOT(setValue(int)));
slider->setValue(10);

程序片段如上。怎么不能初始化，信号和槽也关联不上。
求解！！！

引用楼主lukepower于2011-04-21 10:45发表的 slider与spinbox问题 :
QSpinBox *spinBox=new QSpinBox;
QSlider *slider =new QSlider;
spinBox->setRange(0,20);
slider->setRange(0,20);
QObject::connect(spinBox, SIGNAL(valueChanged(int)),slider, SLOT(setValue(int)));
.......

已经解决了哈！我是用的窗口部件，修改程序段如下！
// QSpinBox *spinBox=new QSpinBox;
   // QSlider *slider =new QSlider;
    ui->spinBox->setRange(0,20);
    ui->slider->setRange(0,20);
    QObject::connect(ui->spinBox, SIGNAL(valueChanged(int)),ui->slider, SLOT(setValue(int)));
    QObject::connect(ui->slider, SIGNAL(valueChanged(int)),ui->spinBox, SLOT(setValue(int)));
    ui->slider->setValue(10);

佩服佩服~~