BrightnessChooser BrightnessChooser 0 0 124 163 Form1 unnamed layout9 unnamed layout7 unnamed 0 0 spacer1 Horizontal Minimum 20 20 layout5 unnamed valueLabel 0 AlignCenter brightnessSlider Vertical set the brightness and click OK or press ENTER spacer1_2 Horizontal Minimum 16 20 okButton 1 1 0 0 &OK Alt+O okButton clicked() BrightnessChooser updateBrightness() brightnessSlider valueChanged(int) BrightnessChooser updateValue(int) updateBrightness() updateValue(int)