使用C++在QWidget窗口中存放了一个QTableWidget，使用QStack来存储QTableWidget的TableIndex历史记录功能，最多存20页，并通过按下“前进”和“后退”按钮来实现界面的多次前进和多次返回功能，已经addtab和getwidget-QT开发中文网

的实现。

以下是一个可能的解决方案：

#include <QVBoxLayout>
#include <QPushButton>
#include <QStack>
#include <QWidget>
#include <QTableWidget>

class TableHistory : public QWidget {
    Q_OBJECT
public:
    explicit TableHistory(QWidget *parent = nullptr);

signals:

private slots:
    void onForwardClicked();
    void onBackwardClicked();

private:
    void addToStack(); // add current table index to stack
    void updateButtons(); // update forward/backward button status

    QTableWidget *m_table;
    QPushButton *m_forwardButton;
    QPushButton *m_backwardButton;
    QStack<int> m_history; // stack to store table index history
};

TableHistory::TableHistory(QWidget *parent) :
        QWidget(parent), m_table(new QTableWidget(this)),
        m_forwardButton(new QPushButton("Forward", this)),
        m_backwardButton(new QPushButton("Backward", this)) {

    QVBoxLayout *layout = new QVBoxLayout(this);
    layout->addWidget(m_table);
    QHBoxLayout *buttonLayout = new QHBoxLayout;
    buttonLayout->addWidget(m_backwardButton);
    buttonLayout->addWidget(m_forwardButton);
    layout->addLayout(buttonLayout);

    // connect button signals/slots
    connect(m_forwardButton, &QPushButton::clicked, this, &TableHistory::onForwardClicked);
    connect(m_backwardButton, &QPushButton::clicked, this, &TableHistory::onBackwardClicked);

    // add initial table index to stack
    addToStack();
}

void TableHistory::addToStack() {
    m_history.push(m_table->currentIndex().row());
    if (m_history.size() > 20) { // limit stack size to 20
        m_history.pop();
    }
    updateButtons(); // update button status after adding to stack
}

void TableHistory::updateButtons() {
    m_forwardButton->setEnabled(!m_history.isEmpty() && m_history.top() != m_table->rowCount() - 1);
    m_backwardButton->setEnabled(m_history.size() > 1);
}

void TableHistory::onForwardClicked() {
    // move to next index in stack
    int rowIndex = m_history.pop();
    m_table->setCurrentCell(rowIndex + 1, 0);
    addToStack(); // add new index to stack
}

void TableHistory::onBackwardClicked() {
    // move to previous index in stack
    m_history.pop();
    int rowIndex = m_history.top();
    m_table->setCurrentCell(rowIndex, 0);
    updateButtons(); // update button status after moving back
}

QTableWidget *TableHistory::getTableWidget() const {
    return m_table;
}

使用方法：

TableHistory *tableHistory = new TableHistory(this); // create widget

// add table rows/columns/data
tableHistory->getTableWidget()->setRowCount(5);
tableHistory->getTableWidget()->setColumnCount(2);
for (int row = 0; row < 5; ++row) {
    for (int col = 0; col < 2; ++col) {
        QTableWidgetItem *item = new QTableWidgetItem(QString("Item %1").arg(row * 2 + col));
        tableHistory->getTableWidget()->setItem(row, col, item);
    }
}

// add widget to layout
layout()->addWidget(tableHistory);

// access table widget if needed
QTableWidget *table = tableHistory->getTableWidget();