[Qt-interest] QDateEdit unable to popup calendar widget in QTableView

[Ibic Dev]

Hi,

I followed the Spin Box Delegate Example when I was trying to put
QDateEdit in QTableView; my hope was to use QDateEdit's calendar
widget to edit the date column in QTableView.  However, the calendar
just couldn't be popped up despite that I called QDateEdit's
setCalendarPopup(true) method.  The calendar seemed to appear for
short moment then completely gone.  QDateEdit worked otherwise (e.g.,
the fields could be edited using spin boxes) if I setCalendarPopup to
false.

Anyone knows what was wrong?  I searched Qt Interest Archives and
found no answer.

Thanks in advance.
Ibic

The following is my code snippet:
======

// Custome Item Delegate using QDateEdit as editor
class DateDelegate : public QItemDelegate
{
  Q_OBJECT

public:
  DateDelegate(QObject *parent=0)
    : QItemDelegate(parent) {}

  void paint(QPainter *painter, const QStyleOptionViewItem &option,
                           const QModelIndex &index) const
  {
    QString text = index.model()->data(index, Qt::DisplayRole).toString();
    QStyleOptionViewItem myOption = option;
    myOption.displayAlignment = Qt::AlignCenter | Qt::AlignVCenter;
    drawDisplay(painter, myOption, myOption.rect, text);
    drawFocus(painter, myOption, myOption.rect);
  }

  QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                                      const QModelIndex &index) const
  {
    QDateEdit *dateEdit = new QDateEdit(parent);
    dateEdit->setDisplayFormat("yyyy-MM-dd");
    dateEdit->setCalendarPopup(true); // enable calendar
    return dateEdit;
  }

  void setEditorData(QWidget *editor, const QModelIndex &index) const
  {
    QDate date = index.model()->data(index, Qt::DisplayRole).toDate();
    if (date == QDate()) date = QDate::currentDate();
    QDateEdit *dateEdit = qobject_cast<QDateEdit *>(editor);
    dateEdit->setDate(date);
  }

  void setModelData(QWidget *editor, QAbstractItemModel *model,
                                  const QModelIndex &index) const
  {
    QDateEdit *dateEdit = qobject_cast<QDateEdit *>(editor);
    QDate date = dateEdit->date();
    model->setData(index, date);
  }
};

QSqlTableModel *model = new QSqlTableModel;
// irrelevant code skipped

QTableView *view = new QTableView;
view->setModel(model);
view->setItemDelegateForColumn(1, new DateDelegate(creditView));
// irrelevant code skipped