QT的滑动条在开发的过程中经常使用，默认的QSlider风格比较简陋，一般达不到UI设计的效果，本篇记录一个QSlider使用过程中风格的设置。

1.qss常用的字段属性

1.1背景属性

属性	值	意思
background	Background	背景属性
background-color	Brush	背景颜色
background-image	Url	背景图
background-repeat	Repeat	是否重绘
background-position	Alignment	背景位置
background-attachment	Attachment	确定背景图像是相对于窗口滚动还是固定。
background-clip	Origin	绘制区域可裁剪
background-origin	Origin	背景位置和背景图像一起使用

2.边框属性boder

属性	值	意思
border	Border	边框属性
border-top	Border	顶部边框属性
border-right	Border	右边边框属性
border-bottom	Border	底部边框属性
border-left	Border	左边边框属性
border-color	Box Colors	边框颜色
border-top-color	Brush	顶部边框颜色
border-right-color	Brush	右边边框颜色
border-bottom-color	Brush	底部边框颜色
border-left-color	Brush	左边边框颜色
border-image	Border Image	边框背景图
border-radius	Radius	边框圆角弧度

3.外边距属性margin

属性	值	意思
margin	Box Lengths	外边距属性
margin-top	Length	顶部外边距属性
margin-right	Length	右边外边距属性
margin-bottom	Length	底部外边距属性
margin-left	Length	左边外边距属性

4.内边距属性padding

代码实现

#include "qsliderdemo.h"
#include "ui_qsliderdemo.h"

QSliderDemo::QSliderDemo(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::QSliderDemo)
{
    ui->setupUi(this);
    initView();
}

QSliderDemo::~QSliderDemo()
{
    delete ui;
}


void QSliderDemo::initView()
{
    // 水平QSlider  滑动块前面的区域风格  滑动块后面的区域风格  滑块风格 margin: 20px 0;
    QString horizontalStyle = QString(
                "QSlider::groove:horizontal{border: 0px solid #ff0000;height:4px;}"
                "QSlider::sub-page:horizontal{background: #2F89FC;border-radius: 2px;}"
                "QSlider::add-page:horizontal{background: #FFFFFF;border-radius: 2px;}"
                "QSlider::handle:horizontal{background:#FFFFFF;border: 1px solid #666666;border-radius:8px;width:18px;height:18px;margin-top:-6px;margin-bottom: -6px;}"
                );


    ui->horizontalSlider->setStyleSheet(horizontalStyle);

    QString horizontalStyle2 = QString(
                "QSlider::groove:horizontal{border: 0px solid #ff0000;height:4px;}"
                "QSlider::sub-page:horizontal{background: #2F89FC;border-radius: 2px;}"
                "QSlider::add-page:horizontal{background: #FFFFFF;border-radius: 2px;}"
                "QSlider::handle:horizontal{background:#FFFF00;border:1px solid #0000ff;border-radius:8px;width:18px;height:18px;margin:-6px 1px -6px 1px;}"
                );

    ui->horizontalSlider_2->setStyleSheet(horizontalStyle2);

    //滑动块以图片作背景
    QString horizontalStyle3 = QString(
                "QSlider::groove:horizontal{border: 0px solid #ff0000;height:4px;}"
                "QSlider::sub-page:horizontal{background: #2F89FC;border-radius: 2px;}"
                "QSlider::add-page:horizontal{background: #FFFFFF;border-radius: 2px;}"
                "QSlider::handle:horizontal{border-image:url(:/image/slider.png);width:17px;height:17px;margin-top:-6px;margin-bottom: -6px;}"
                );

    ui->horizontalSlider_3->setStyleSheet(horizontalStyle3);

    // 垂直QSlider  滑动块上面的区域风格  滑动块下面的区域风格  滑块风格
    QString verticalStyle = QString(
                "QSlider::groove:vertical{border: 0px solid #ff0000;width:4px;}"
                "QSlider::sub-page:vertical{background: #2F89FC;border-radius: 2px;}"
                "QSlider::add-page:vertical{background: #FFFFFF;border-radius: 2px;}"
                "QSlider::handle:vertical{background:#FFFFFF;border: 1px solid #666666;border-radius:8px;width:18px;height:18px;margin-left:-6px;margin-right: -6px;}"
                );


    ui->verticalSlider->setStyleSheet(verticalStyle);

    QString verticalStyle2 = QString(
                "QSlider::groove:vertical{border: 0px solid #ff0000;width:4px;}"
                "QSlider::sub-page:vertical{background: #2F89FC;border-radius: 2px;}"
                "QSlider::add-page:vertical{background: #FFFFFF;border-radius: 2px;}"
                "QSlider::handle:vertical{background:#FFFF00;border:1px solid #0000ff;border-radius:8px;height:18px;width:18px;margin:1px -6px 1px -6px;}"
                );

    ui->verticalSlider_2->setStyleSheet(verticalStyle2);

    //滑动块以图片作背景
    QString verticalStyle3 = QString(
                "QSlider::groove:vertical{border: 0px solid #ff0000;width:4px;}"
                "QSlider::sub-page:vertical{background: #2F89FC;border-radius: 2px;}"
                "QSlider::add-page:vertical{background: #FFFFFF;border-radius: 2px;}"
                "QSlider::handle:vertical{border-image:url(:/image/slider.png);width:17px;height:17px;margin-left:-6px;margin-right: -6px;}"
                );

    ui->verticalSlider_3->setStyleSheet(verticalStyle3);
}

运行效果

参考文档

https://doc.qt.io/qt-5/stylesheet-examples.html
https://blog.csdn.net/qq_33659478/article/details/119253405
https://doc.qt.io/qt-5/stylesheet-reference.html
https://blog.csdn.net/tax10240809163com/article/details/50899023
https://blog.csdn.net/weixin_45001971/article/details/126107638