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qt'QFocusData (./qt-2.1.0/src/kernel/qfocusdata.h:34)

class Q_EXPORT QFocusData {
public:
    QWidget* focusWidget() const { return it.current(); }

    // List-iteration
    QWidget* home();
    QWidget* next();
    QWidget* prev();
    int count() const { return focusWidgets.count(); }

private:
    friend class QWidget;
    QFocusData()
	: it(focusWidgets) {}
    QWidgetList	  focusWidgets;
    QWidgetListIt it;
};

qt'QFocusData::home() (./qt-2.1.0/src/kernel/qfocusdata.cpp:72)

QWidget* QFocusData::home()
{
    focusWidgets.find(it.current());
    return focusWidgets.current();
}

/*!
  Moves the cursor to the right.  Note that the focus widgets
  are a \e loop of widgets.  If you keep calling next(), it will
  loop, without ever returning 0.
*/

qt'QFocusData::next() (./qt-2.1.0/src/kernel/qfocusdata.cpp:83)

QWidget* QFocusData::next()
{
    QWidget* r = focusWidgets.next();
    if ( !r )
	r = focusWidgets.first();
    return r;
}

/*!
  Moves the cursor to the left.  Note that the focus widgets
  are a \e loop of widgets.  If you keep calling prev(), it will
  loop, without ever returning 0.
*/

qt'QFocusData::prev() (./qt-2.1.0/src/kernel/qfocusdata.cpp:96)

QWidget* QFocusData::prev()
{
    QWidget* r = focusWidgets.prev();
    if ( !r )
	r = focusWidgets.last();
    return r;
}