drawer.h

#ifndef DRAWER_H
#define DRAWER_H
#include <QWidget>
#include <QToolBox>
#include <QToolButton>
#include <QGroupBox>
#include <QVBoxLayout>

class Drawer : public QToolBox
{
    Q_OBJECT
public:
    Drawer(QWidget* parent = nullptr,Qt::WindowFlags f = Qt::WindowFlags());

private:
    QToolButton* ToolBtn1_1;
    QToolButton* ToolBtn1_2;
    QToolButton* ToolBtn1_3;
    QToolButton* ToolBtn2_1;
    QToolButton* ToolBtn2_2;
    QToolButton* ToolBtn2_3;
};

#endif // DRAWER_H

drawer.cpp

#include "drawer.h"

Drawer::Drawer(QWidget* parent,Qt::WindowFlags f)
    :QToolBox(parent,f)
{
    setWindowTitle(tr("Test QQ"));
    ToolBtn1_1 = new QToolButton;
    ToolBtn1_1->setText(tr("张1"));
    ToolBtn1_1->setIcon(QPixmap("312.ico"));
    ToolBtn1_1->setIconSize(QPixmap("312.ico").size());
    ToolBtn1_1->setAutoRaise(true);
    ToolBtn1_1->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

    ToolBtn1_2 = new QToolButton;
    ToolBtn1_2->setText(tr("张2"));
    ToolBtn1_2->setIcon(QPixmap("312.png"));
    ToolBtn1_2->setIconSize(QPixmap("312.png").size());
    ToolBtn1_2->setAutoRaise(true);
    ToolBtn1_2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

    ToolBtn1_3 = new QToolButton;
    ToolBtn1_3->setText(tr("张3"));
    ToolBtn1_3->setIcon(QPixmap("312.png"));
    ToolBtn1_3->setIconSize(QPixmap("312.png").size());
    ToolBtn1_3->setAutoRaise(true);
    ToolBtn1_3->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

    QGroupBox* GroupBox1 = new QGroupBox;
    QVBoxLayout* Layout1 = new QVBoxLayout(GroupBox1);
    Layout1->setMargin(2);
    Layout1->setAlignment(Qt::AlignLeft);

    Layout1->addWidget(ToolBtn1_1);
    Layout1->addWidget(ToolBtn1_2);
    Layout1->addWidget(ToolBtn1_3);
    //插入一个占位符
    Layout1->addStretch();

    ToolBtn2_1 = new QToolButton;
    ToolBtn2_1->setText(tr("张6"));
    ToolBtn2_1->setIcon(QPixmap("312.png"));
    ToolBtn2_1->setIconSize(QPixmap("312.png").size());
    ToolBtn2_1->setAutoRaise(true);
    ToolBtn2_1->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

    ToolBtn2_2 = new QToolButton;
    ToolBtn2_2->setText(tr("张7"));
    ToolBtn2_2->setIcon(QPixmap("312.png"));
    ToolBtn2_2->setIconSize(QPixmap("312.png").size());
    ToolBtn2_2->setAutoRaise(true);
    ToolBtn2_2->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

    ToolBtn2_3 = new QToolButton;
    ToolBtn2_3->setText(tr("张8"));
    ToolBtn2_3->setIcon(QPixmap("312.png"));
    ToolBtn2_3->setIconSize(QPixmap("312.png").size());
    ToolBtn2_3->setAutoRaise(true);
    ToolBtn2_3->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);

    QGroupBox* GroupBox2 = new QGroupBox;
    QVBoxLayout* Layout2 = new QVBoxLayout(GroupBox2);
    Layout2->setMargin(2);
    Layout2->setAlignment(Qt::AlignHCenter);

    Layout2->addWidget(ToolBtn2_1);
    Layout2->addWidget(ToolBtn2_2);
    Layout2->addWidget(ToolBtn2_3);

    this->addItem((QWidget*)GroupBox1,tr("测试1"));
    this->addItem((QWidget*)GroupBox2,tr("    测试2"));

    this->setItemIcon(0,QPixmap("312.ico"));




}

main.cpp

#include "myqqexample.h"
#include "drawer.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
   // MyQQExample w;
   // w.show();
    Drawer drawer;
    drawer.show();
    return a.exec();
}

运行图