connect(ui->spinBox_luminosity,&QSpinBox::valueChanged, ui->horizontalSlider_luminosity, &QSlider::setValue);connect(ui->spinBox_luminosity,&QSpinBo
阅读背景：
Qt error ------ no matching function for call to QObject::connect(QSpinBox*&, , QSlider*&, void (QAbstractSlider::*)(int))
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