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This is the verbatim text of the qcombobox.h include file. It is provided only for illustration; the copyright remains with Troll Tech.
** $Id: qcombobox.h,v 2.44 1999/06/11 16:38:54 ettrich Exp $
** Definition of QComboBox class
** Created : 950426
** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
** This file is part of the Qt GUI Toolkit.
** This file may be distributed under the terms of the Q Public License
** as defined by Troll Tech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
** Licensees holding valid Qt Professional Edition licenses may use this
** file in accordance with the Qt Professional Edition License Agreement
** provided with the Qt Professional Edition.
** See http://www.troll.no/pricing.html or email sales@troll.no for
** information about the Professional Edition licensing, or see
** http://www.troll.no/qpl/ for QPL licensing information.


#ifndef QT_H
#include "qwidget.h"
#endif // QT_H

struct QComboData;
class QStrList;
class QStringList;
class QLineEdit;
class QValidator;
class QListBox;

class Q_EXPORT QComboBox : public QWidget
    QComboBox( QWidget *parent=0, const char *name=0 );
    QComboBox( bool rw, QWidget *parent=0, const char *name=0 );

    int         count() const;

    void        insertStringList( const QStringList &, int index=-1 );
    void        insertStrList( const QStrList &, int index=-1 );
    void        insertStrList( const QStrList *, int index=-1 );
    void        insertStrList( const char **, int numStrings=-1, int index=-1);

    void        insertItem( const QString &text, int index=-1 );
    void        insertItem( const QPixmap &pixmap, int index=-1 );

    void        removeItem( int index );
    void        clear();

    QString currentText() const;
    QString text( int index ) const;
    const QPixmap *pixmap( int index ) const;

    void        changeItem( const QString &text, int index );
    void        changeItem( const QPixmap &pixmap, int index );

    int         currentItem() const;
    virtual void        setCurrentItem( int index );

    bool        autoResize()    const;
    virtual void        setAutoResize( bool );
    QSize       sizeHint() const;
    virtual QSizePolicy sizePolicy() const;

    virtual void        setBackgroundColor( const QColor & );
    virtual void        setPalette( const QPalette & );
    virtual void        setFont( const QFont & );
    virtual void        setEnabled( bool );

    virtual void        setSizeLimit( int );
    int         sizeLimit() const;

    virtual void        setMaxCount( int );
    int         maxCount() const;

    enum Policy { NoInsertion, AtTop, AtCurrent, AtBottom,
                  AfterCurrent, BeforeCurrent };

    virtual void        setInsertionPolicy( Policy policy );
    Policy      insertionPolicy() const;

    virtual void        setValidator( const QValidator * );
    const QValidator * validator() const;

    virtual void        setListBox( QListBox * );
    QListBox *  listBox() const;

    virtual void        setAutoCompletion( bool );
    bool        autoCompletion() const;

    bool        eventFilter( QObject *object, QEvent *event );

public slots:
    void        clearValidator();
    void        clearEdit();
    virtual void        setEditText( const QString &);

    void        activated( int index );
    void        highlighted( int index );
    void        activated( const QString &);
    void        highlighted( const QString &);
    void        textChanged( const QString &);

private slots:
    void        internalActivate( int );
    void        internalHighlight( int );
    void        internalClickTimeout();
    void        returnPressed();

    void        paintEvent( QPaintEvent * );
    void        resizeEvent( QResizeEvent * );
    void        mousePressEvent( QMouseEvent * );
    void        mouseMoveEvent( QMouseEvent * );
    void        mouseReleaseEvent( QMouseEvent * );
    void        mouseDoubleClickEvent( QMouseEvent * );
    void        keyPressEvent( QKeyEvent *e );
    void        focusInEvent( QFocusEvent *e );
    void     styleChange( QStyle& );

    void        popup();
    void updateMask();

    void        popDownListBox();
    void        reIndex();
    void        currentChanged();
    QRect       arrowRect() const;
    bool        getMetrics( int *dist, int *buttonW, int *buttonH ) const;

    QComboData  *d;

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

#endif // QCOMBOBOX_H

Copyright 1999 Troll TechTrademarks
Qt version 2.0.2