60 主窗口

第二步，添加模型并与视图绑定，实现在主窗口中编辑表格的功能。

60.1 实现功能

C:\Users\Minwei\Projects\Qt\Sheet\sheetwindow.h：

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...
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#include <QStandardItemModel>
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#include <QItemSelectionModel>
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...
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class SheetWindow : public QMainWindow
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{
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    ...
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private slots:
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    ...
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    void on_m_selection_currentChanged(
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        QModelIndex const& current, QModelIndex const& previous);
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    ...
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private:
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    ...
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    QStandardItemModel* m_model;
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    QItemSelectionModel* m_selection;
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    ...
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};
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...

C:\Users\Minwei\Projects\Qt\Sheet\sheetwindow.cpp：

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...
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SheetWindow::SheetWindow(QWidget *parent)
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    : QMainWindow(parent)
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    ...
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    , m_model(new QStandardItemModel(100, 100, this))
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    , m_selection(new QItemSelectionModel(m_model))
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    ...
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{
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    ...
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    ui->m_table->setModel(m_model);
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    ui->m_table->setSelectionModel(m_selection);
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    ...
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    connect(m_selection, SIGNAL(currentChanged(QModelIndex, QModelIndex)),
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        this,SLOT(on_m_selection_currentChanged(QModelIndex, QModelIndex)));
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    ...
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}
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...
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void SheetWindow::on_m_selection_currentChanged(
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    QModelIndex const& current, QModelIndex const& previous)
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{
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    Q_UNUSED(previous)
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    if (!current.isValid())
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        return;
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    m_labCellPos->setText(QString("单元格位置：第%1行，第%2列")
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        .arg(current.row() + 1).arg(current.column() + 1));
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    QStandardItem* item = m_model->itemFromIndex(current);
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    m_labCellText->setText(" 单元格内容：" + item->text());
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}
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...

60.2 测试验证

运行效果如图所示：