qlistbox-h.html

qtopiaphone英文帮助,用于初学者和开发人员,初学者可以用来学习,开发人员可以用来资料查询.

    int cellWidth(int i) const { ASSERT(i==0); return maxItemWidth(); }
    int numCols() const { return numColumns(); }
#endif

    int itemHeight( int index = 0 ) const;
    QListBoxItem * itemAt( QPoint ) const;

    QRect itemRect( QListBoxItem *item ) const;

    QListBoxItem *firstItem() const;

    void sort( bool ascending = TRUE );

public slots:
    virtual void ensureCurrentVisible();
    virtual void clearSelection();
    void selectAll( bool select ); // ###### make virtual
    void invertSelection(); // ######### make virtual

signals:
    void highlighted( int index );
    void selected( int index );
    void highlighted( const QString &);
    void selected( const QString &);
    void highlighted( QListBoxItem * );
    void selected( QListBoxItem * );

    void selectionChanged();
    void selectionChanged( QListBoxItem * );
    void currentChanged( QListBoxItem * );
    void clicked( QListBoxItem * );
    void clicked( QListBoxItem *, const QPoint & );
    void pressed( QListBoxItem * );
    void pressed( QListBoxItem *, const QPoint & );

    void doubleClicked( QListBoxItem * );
    void returnPressed( QListBoxItem * );
    void rightButtonClicked( QListBoxItem *, const QPoint & );
    void rightButtonPressed( QListBoxItem *, const QPoint & );
    void mouseButtonPressed( int, QListBoxItem*, const QPoint& );
    void mouseButtonClicked( int, QListBoxItem*, const QPoint& );

    void onItem( QListBoxItem *item );
    void onViewport();

protected:
    void viewportMousePressEvent( QMouseEvent * );
    void viewportMouseReleaseEvent( QMouseEvent * );
    void viewportMouseDoubleClickEvent( QMouseEvent * );
    void viewportMouseMoveEvent( QMouseEvent * );
    void mousePressEvent( QMouseEvent * );
    void mouseReleaseEvent( QMouseEvent * );
    void mouseDoubleClickEvent( QMouseEvent * );
    void mouseMoveEvent( QMouseEvent * );
    void keyPressEvent( QKeyEvent *e );
    void focusInEvent( QFocusEvent *e );
    void focusOutEvent( QFocusEvent *e );
    void resizeEvent( QResizeEvent * );
    void showEvent( QShowEvent * );

    void updateItem( int index );
    void updateItem( QListBoxItem * );

#ifndef QT_NO_COMPAT
    void updateCellWidth() { }
    int totalWidth() const { return contentsWidth(); }
    int totalHeight() const { return contentsHeight(); }
#endif

    virtual void paintCell( QPainter *, int row, int col );

    void toggleCurrentItem();
    bool isRubberSelecting() const;

    void doLayout() const;

#ifndef QT_NO_COMPAT // obsolete, provided for source compatibility
    bool itemYPos( int index, int *yPos ) const;
    int findItem( int yPos ) const {return index(itemAt(QPoint(0,yPos)));}
#endif

protected slots:
    void clearInputString();

private slots:
    void refreshSlot();
    void doAutoScroll();
    void adjustItems();

private:
    void tryGeometry( int, int ) const;
    int currentRow() const;
    int currentColumn() const;
    void updateSelection();
    void drawRubber();
    void doRubberSelection( const QRect &old, const QRect &rubber );
    void handleItemChange( QListBoxItem *old, bool shift, bool control );
    void selectRange( QListBoxItem *from, QListBoxItem *to, bool invert, bool includeFirst, bool clearSel = FALSE );

    void emitChangedSignal( bool );

    int columnAt( int ) const;
    int rowAt( int ) const;

    QListBoxPrivate * d;

    static QListBox * changedListBox;

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QListBox( const QListBox & );
    QListBox &operator=( const QListBox & );
#endif
};


class Q_EXPORT <a href="qlistboxitem.html">QListBoxItem</a>
{
public:
    QListBoxItem( QListBox* listbox = 0 );
    QListBoxItem( QListBox* listbox, QListBoxItem *after );
    virtual ~QListBoxItem();

    virtual QString text() const;
    virtual const QPixmap *pixmap() const;

    virtual int  height( const QListBox * ) const;
    virtual int  width( const QListBox * )  const;

    bool selected() const { return s; }
    bool current() const;

    QListBox *listBox() const;

    void setSelectable( bool b );
    bool isSelectable() const;

    QListBoxItem *next() const;
    QListBoxItem *prev() const;

protected:
    virtual void paint( QPainter * ) = 0;
    virtual void setText( const QString &amp;text ) { txt = text; }
    void setCustomHighlighting( bool );

private:
    QString txt;
    uint s:1;
    uint dirty:1;
    uint custom_highlight : 1;
    int x, y;
    QListBoxItem * p, * n;
    QListBox* lbox;
    friend class QListBox;
    friend class QListBoxPrivate;
    friend class QComboBox;

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QListBoxItem( const QListBoxItem &amp; );
    QListBoxItem &amp;operator=( const QListBoxItem &amp; );
#endif
};


class Q_EXPORT <a href="qlistboxtext.html">QListBoxText</a> : public <a href="qlistboxitem.html">QListBoxItem</a>
{
public:
    QListBoxText( QListBox* listbox, const QString &amp; text=QString::null );
    QListBoxText( const QString &amp; text=QString::null );
    QListBoxText( QListBox* listbox, const QString &amp; text, QListBoxItem *after );
   ~QListBoxText();

    int  height( const QListBox * ) const;
    int  width( const QListBox * )  const;

protected:
    void  paint( QPainter * );

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QListBoxText( const QListBoxText &amp; );
    QListBoxText &amp;operator=( const QListBoxText &amp; );
#endif
};


class Q_EXPORT <a href="qlistboxpixmap.html">QListBoxPixmap</a> : public <a href="qlistboxitem.html">QListBoxItem</a>
{
public:
    QListBoxPixmap( QListBox* listbox, const QPixmap &amp; );
    QListBoxPixmap( const QPixmap &amp; );
    QListBoxPixmap( QListBox* listbox, const QPixmap &amp; pix, QListBoxItem *after );
    QListBoxPixmap( QListBox* listbox, const QPixmap &amp;, const QString&amp; );
    QListBoxPixmap( const QPixmap &amp;, const QString&amp; );
    QListBoxPixmap( QListBox* listbox, const QPixmap &amp; pix, const QString&amp;, QListBoxItem *after );
   ~QListBoxPixmap();

    const QPixmap *pixmap() const { return &amp;pm; }

    int  height( const QListBox * ) const;
    int  width( const QListBox * )  const;

protected:
    void paint( QPainter * );

private:
    QPixmap pm;
private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QListBoxPixmap( const QListBoxPixmap &amp; );
    QListBoxPixmap &amp;operator=( const QListBoxPixmap &amp; );
#endif
};


#endif // QT_NO_LISTBOX

#endif // QLISTBOX_H

</pre>
<p><address><hr><div align="center">
<table width="100%" cellspacing="0" border="0"><tr>
<td>Copyright