迅雷demo
链接：https://pan.xunlei.com/s/VO8lJGf-bokGg8VVVKUwiF1AA1?pwd=xxce#
复制这段内容后打开手机迅雷App，查看更方便

#include <QStyledItemDelegate>

class WrapDelegate : public QStyledItemDelegate
{
    Q_OBJECT
public:
    WrapDelegate(QObject * parent  = 0);
    ~WrapDelegate();
    void paint(QPainter *painter, const QStyleOptionViewItem & option,
               const QModelIndex & index) const override;
};

重新这里的paint

void WrapDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    auto text = index.model()->data(index, Qt::DisplayRole).toString();
    //注意，这里必须用TextWrapAnywhere!  TextWordWrap无效
    painter->drawText(option.rect, Qt::TextWrapAnywhere | Qt::AlignVCenter, text);
}

使用方法

  auto pTable = new QTableView;
    pTable->setModel(&m_model);

    auto pDelegate0 = new WrapDelegate();
    auto pDelegate1 = new WrapDelegate();
    auto pDelegate2 = new WrapDelegate();
    pTable->setItemDelegateForColumn(0, pDelegate0);
    pTable->setItemDelegateForColumn(1, pDelegate1);
    pTable->setItemDelegateForColumn(2, pDelegate2);