QTableView单元格隐藏焦点虚线框

使用代理

class CommonDelegate : public QStyledItemDelegate
{
    Q_OBJECT
public:
    CommonDelegate();
private:
    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
};

void CommonDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QStyleOptionViewItem itemOption(option);
    if(itemOption.state&QStyle::State_HasFocus)
    {
        itemOption.state=itemOption.state^QStyle::State_HasFocus;
    }
    QStyledItemDelegate::paint(painter,itemOption,index);
}

TableView设置：

this->setItemDelegate(new CommonDelegate());

前后对比：