qslider如何更改滑块和进度条的样式

[neipe2003]

qslider滑块的大小，形状，颜色和进度条的颜色怎么改。
以美观为主！

[ppdayz]

qslider->setstylesheet()

QSlider::groove:horizontal {
     border: 1px solid #999999;
     height: 8px; /* the groove expands to the size of the slider by default. by giving it a height, it has a fixed size */
     background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #B1B1B1, stop:1 #c4c4c4);
     margin: 2px 0;
 }

 QSlider::handle:horizontal {
     background: qlineargradient(x1:0, y1:0, x2:1, y2:1, stop:0 #b4b4b4, stop:1 #8f8f8f);
     border: 1px solid #5c5c5c;
     width: 18px;
     margin: -2px 0; /* handle is placed by default on the contents rect of the groove. Expand outside the groove */
     border-radius: 3px;
 }

如果想改变颜色的滑块部分之前和之后,可以使用dd-page and sub-page的子控制:

 QSlider::groove:vertical {
     background: red;
     position: absolute; /* absolutely position 4px from the left and right of the widget. setting margins on the widget should work too... */
     left: 4px; right: 4px;
 }

 QSlider::handle:vertical {
     height: 10px;
     background: green;
     margin: 0 -4px; /* expand outside the groove */
 }

 QSlider::add-page:vertical {
     background: white;
 }

 QSlider::sub-page:vertical {
     background: pink;
 }

[xxcc309]

可以setStyle（new style）；
在style中重写函数drawComplexControl(ComplexControl control, const QStyleOptionComplex *option,QPainter *painter, const QWidget *widget) const，在函数中画slider。

case CC_Slider:
		if (const QStyleOptionSlider *slider = qstyleoption_cast<const QStyleOptionSlider *>(option)) {
			QRect groove = subControlRect(CC_Slider, option, SC_SliderGroove, widget);
			QRect handle = subControlRect(CC_Slider, option, SC_SliderHandle, widget);
			painter->save();
			QPixmap grv = cached( tr(":/MyQTInterface/Resources/sliderGroove.png") );//设置进度条图片
			QPixmap hndl = cached( tr(":/MyQTInterface/Resources/sliderHandle.png") );//设置滑块图片
			QPixmap hndlMove = cached( tr(":/MyQTInterface/Resources/sliderHandleMove.png"));
			if ((option->subControls & SC_SliderGroove) && groove.isValid() && handle.isValid()) {
				painter->drawPixmap(QRect(groove.x() , groove.y()-2  ,
					groove.width(), grv.height()),
					grv);
			}
			//如果被选中
			if ((option->subControls & SC_SliderHandle) && (slider->state & State_Sunken)) 
				painter->drawPixmap(handle.topLeft(), hndlMove);
			else if((option->subControls & SC_SliderHandle))
				painter->drawPixmap(handle.topLeft(), hndl);
			painter->restore();
		}
        break;

图片根据自己需要换上自己喜欢的就可以了。