c++ - 在 QtableView 中更改行标签开始索引（垂直标题）

Question

在 QTableView 上显示数据时，由于内部原因，我无法显示第一行，因此必须隐藏它，使用

(qtableobj)->hideRow(0);

问题是，现在行标签从 2 开始。

如何从 1 开始索引，同时保持第一行隐藏？

谢谢。

Answer 1

You can try to involve the QSortFilterProxyModel that will filter out the first row in your model. The code could look like:

class FilterModel : QSortFilterProxyModel
{
[..]
protected:
    bool filterAcceptsRow(int sourceRow, const QModelIndex & sourceParent) const
    {
         QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
         if (index.row() == 0) // The first row to filter.
             return false;
         else
             return QSortFilterProxyModel::filterAcceptsRow(sourceRow, sourceParent);
    }
}

Finally you need to set this model to your table view:

QTableView *table = new QTableView;
MyItemModel *sourceModel = new MyItemModel;
QSortFilterProxyModel *proxyModel = new FilterModel;

proxyModel->setSourceModel(sourceModel);
table->setModel(proxyModel);

UPDATE

Since the issue is in how the header view displays row numbers, here is the alternative solution which based on special handling of header data in the model:

class Model : public QAbstractTableModel
{
public:
    [..]
    virtual QVariant headerData(int section, Qt::Orientation orientation,
                                int role = Qt::DisplayRole) const
    {
        if (role == Qt::DisplayRole) {
            if (orientation == Qt::Vertical) {
                // Decrease the row number value for vertical header view.
                return section - 1;
            }
        }
        return QAbstractTableModel::headerData(section, orientation, role);
    }
    [..]
};

Set up the table view with the hidden first row.

QTableView *table = new QTableView;
Model *sourceModel = new Model;
table->setModel(sourceModel);
table->hideRow(0);
table->show();