QTabelView使用代理自定义，第一列为QLabel第二列为下拉框

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代理源文件

CustomParamViewDelegate.cpp

#include "CustomParamViewDelegate.h"

CustomParamViewDelegate::CustomParamViewDelegate(QObject *parent)
    : QStyledItemDelegate(parent)
{}

CustomParamViewDelegate::~CustomParamViewDelegate()
{}

QWidget* CustomParamViewDelegate::createEditor(QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index) const
{
    int type = index.data(Qt::UserRole).toInt();

    switch (type) {
    case (CustomParamViewDelegate::Type_ComboBox): {
        return new QComboBox(parent);
    }
    case (CustomParamViewDelegate::Type_Label): {
        return new QLabel(parent);
    }
    case (CustomParamViewDelegate::Type_LinEdit): {
        return new QLineEdit(parent);
    }
    default:
        break;
    }
    return nullptr;
}

void CustomParamViewDelegate::setEditorData(QWidget* editor, const QModelIndex& index) const
{
    int type = index.data(Qt::UserRole).toInt();
    //QString data = index.data().toString();
    QString data = index.data(Qt::UserRole + 1).toString();

    switch (type) {
    case (CustomParamViewDelegate::Type_ComboBox): {
        QComboBox* cob = static_cast<QComboBox*>(editor);
        QStringList strList = data.split(",");
        cob->addItems(strList);
        cob->setCurrentIndex(cob->findText(data));
        break;
    }
    case (CustomParamViewDelegate::Type_Label): {
        QLabel *label = static_cast<QLabel*>(editor);
        label->setText(data);
        break;
    }
    case (CustomParamViewDelegate::Type_LinEdit): {

        break;
    }
    default:
        break;
    }
}

void CustomParamViewDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
    editor->setGeometry(option.rect);
}

void CustomParamViewDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const
{
    int type = index.data(Qt::UserRole).toInt();
    QString value;
    switch (type) {
    case (CustomParamViewDelegate::Type_ComboBox): {
        QComboBox* cob = static_cast<QComboBox*>(editor);
        value = cob->currentText();
        break;
    }
    case (CustomParamViewDelegate::Type_Label): {
        QLabel* cob = static_cast<QLabel*>(editor);
        value = cob->text();
        break;
    }
    case (CustomParamViewDelegate::Type_LinEdit): {
        break;
    }
    default:
        break;
    }
    bool ret = model->setData(index, value, Qt::EditRole);//, Qt::UserRole + 1);
}

代理头文件

CustomParamViewDelegate.h

#pragma once

#include <QItemDelegate>
#include <QStyledItemDelegate>
#include <QComboBox>
#include <QApplication>
#include <QLabel>
#include <QLineEdit>

class CustomParamViewDelegate  : public QStyledItemDelegate
{
    Q_OBJECT
public:
    enum ItemDelegate {
        Type_ComboBox = 1,
        Type_Label,
        Type_LinEdit
    };

    CustomParamViewDelegate(QObject *parent);
    ~CustomParamViewDelegate();

    // 创建编辑器
    virtual QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
    // 设置编辑器数据
    virtual void setEditorData(QWidget* editor, const QModelIndex& index) const override;
    // 更新编辑器集合属性
    virtual void updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
    // 设置模型数据
    virtual void setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const override;
};

使用源文件和头文件文件

widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QStandardItemModel>
#include  "CustomParamViewDelegate.h"

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

private:
    Ui::Widget *ui;
    QStandardItemModel *m_paramViewMode;
    CustomParamViewDelegate *m_delegateParam;
};
#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    //tableView是ui上的tabelview插件
    m_paramViewMode = new QStandardItemModel;
    m_paramViewMode = new QStandardItemModel( ui->tableView);
    m_paramViewMode->setHorizontalHeaderLabels(QStringList() << "1" << "2");
    m_delegateParam = new CustomParamViewDelegate( ui->tableView);
    ui->tableView->setItemDelegate(m_delegateParam);
    ui->tableView->horizontalHeader()->setStretchLastSection(true);
    ui->tableView->setModel(m_paramViewMode);

    QStandardItem* itemLabel = new QStandardItem;
    itemLabel->setData(CustomParamViewDelegate::Type_Label, Qt::UserRole);
    itemLabel->setData(QString("%1").arg(0), Qt::UserRole + 1);

    QStandardItem* itemBox = new QStandardItem;
    itemBox->setData(CustomParamViewDelegate::Type_ComboBox, Qt::UserRole);
    itemBox->setData("1,2,3,4,5", Qt::UserRole + 1);

    m_paramViewMode->setItem(0, 0, itemLabel);
    m_paramViewMode->setItem(0, 1, itemBox);

    //默认显示
    ui->tableView->openPersistentEditor(m_paramViewMode->index(0, 0));
    ui->tableView->openPersistentEditor(m_paramViewMode->index(1, 1));
}

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