[solved]why table header is not displayed?

shalongbasi

I subclassed a model from QAbstracTableModel. When I was in debug mode, the breakpoints I set in the Headerdata() function is reached, but there is no header displayed in the table. No problem with data(...), data are displayed correctly. thanks for help.

** ok, looks like I should not return QString("ccc") when it is not in display role.

@class steptablemodel : public QAbstractTableModel
{
Q_OBJECT
public:
explicit steptablemodel(QObject *parent = 0);
void setStepTable(QStringList &tablelist);
int rowCount(const QModelIndex &parent) const;
int columnCount(const QModelIndex &parent) const;
QVariant data(const QModelIndex &index, int role) const;
QVariant headerData(int section, Qt::Orientation orientation, int role) const;
signals:

public slots:

private:
QStringList stepTable;
};

QVariant steptablemodel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole)
return QString("ccc");
return QVariant("aaa");
}

QVariant steptablemodel::data(const QModelIndex &index, int role) const
{
if (!index.isValid()) return QVariant();

if(index.row() >= stepTable.size() || index.row() < 0)
    return QVariant();

if (role == Qt::DisplayRole) {
    return stepTable.at(index.row()*columnCount(index)+index.column());
}
return QVariant();

}
@