void QTableWidget::cellChanged(int row, int column)
This signal is emitted whenever the data of the item in the cell specified by row and column has changed.
当行和列所确定的cell中的item的数据变化时，被触发。
void QTableWidget::itemChanged(QTableWidgetItem *item)
This signal is emitted whenever the data of item has changed.
当item的数据变化时，被触发。
QTableWidgetItem::QTableWidgetItem(int type = Type)
Constructs a table item of the specified type that does not belong to any table.
构造type类型的item。
See also type().
QTableWidgetItem::QTableWidgetItem(const QString &text, int type = Type)
Constructs a table item with the given text.
用文本构造item。
See also type().
QTableWidgetItem::QTableWidgetItem(const QIcon &icon, const QString &text, int type = Type)
Constructs a table item with the given icon and text.
用图标和文本构造item。
See also type().
QTableWidgetItem::QTableWidgetItem(const QTableWidgetItem &other)
Constructs a copy of other. Note that type() and tableWidget() are not copied.
This function is useful when reimplementing clone().
构造一个other的副本。
This function was introduced in Qt 4.1.
