QT : 自定义滚动条 简约清新_qt 自定义滑动条

Let’s check the result first

/***************** head file *****************/

#ifndef SLIDER_H
#define SLIDER_H

#include <QWidget>
#include <QDebug>
#include <QPainter>
class Slider : public QWidget
{
   
    Q_OBJECT
public:
    Slider(QWidget* parent = nullptr);
    void setValue(int value);
    void setMax(int max);
    void paintEvent(QPaintEvent *ev) ;
    void setButtonWidth(int w);
    void setRightGap(int gap);
protected:
    void mousePressEvent(QMouseEvent *event) ;
    void mouseMoveEvent(QMouseEvent *event) ;
    void mouseReleaseEvent(QMouseEvent *event);
private:

    double knobPos;
    int maximum;
    int
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