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This is the verbatim text of the qlineedit.h include file. It is provided only for illustration; the copyright remains with Troll Tech.
** $Id: qlineedit.h,v 2.50 1999/06/09 03:45:05 agulbra Exp $
** Definition of QLineEdit widget class
** Created : 941011
** 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.


struct QLineEditPrivate;

class QComboBox;
class QValidator;

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

class Q_EXPORT QLineEdit : public QWidget
    QLineEdit( QWidget *parent, const char *name=0 );
    QLineEdit( const QString &, QWidget *parent, const char *name=0 );

    QString text() const;
    QString displayText() const;

    int         maxLength()     const;
    virtual void setMaxLength( int );

    virtual void setFrame( bool );
    bool        frame() const;

    enum        EchoMode { Normal, NoEcho, Password };
    virtual void setEchoMode( EchoMode );
    EchoMode    echoMode() const;

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

    QSize       sizeHint() const;
    QSize       minimumSizeHint() const;
    QSizePolicy sizePolicy() const;

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

    virtual void setSelection( int, int );
    virtual void setCursorPosition( int );
    int         cursorPosition() const;

    bool        validateAndSet( const QString &, int, int, int );

    void        cut();
    void        copy() const;
    void        paste();

    void setAlignment( int flag );
    int alignment() const;

    void        cursorLeft( bool mark, int steps = 1 );
    void        cursorRight( bool mark, int steps = 1 );
    void        cursorWordForward( bool mark );
    void        cursorWordBackward( bool mark );
    void        backspace();
    void        del();
    void        home( bool mark );
    void        end( bool mark );

    void        setEdited( bool );
    bool        edited() const;

    bool        hasMarkedText() const;
    QString     markedText() const;

public slots:
    virtual void setText( const QString &);
    void        selectAll();
    void        deselect();

    void        clearValidator();

    void        insert( const QString &);

    void        clear();

    void        textChanged( const QString &);
    void        returnPressed();

    void        mousePressEvent( QMouseEvent * );
    void        mouseMoveEvent( QMouseEvent * );
    void        mouseReleaseEvent( QMouseEvent * );
    void        mouseDoubleClickEvent( QMouseEvent * );
    void        keyPressEvent( QKeyEvent * );
    void        focusInEvent( QFocusEvent * );
    void        focusOutEvent( QFocusEvent * );
    void        paintEvent( QPaintEvent * );
    void        resizeEvent( QResizeEvent * );
    void        leaveEvent( QEvent * );
    void        dragEnterEvent( QDragEnterEvent * );
    void        dropEvent( QDropEvent * );

    void        repaintArea( int, int );

private slots:
    void        clipboardChanged();
    void        blinkSlot();
    void        dragScrollSlot();

    // kept
    void        newMark( int pos, bool copy=TRUE );
    void        markWord( int pos );
    int         lastCharVisible() const;
    int         minMark() const;
    int         maxMark() const;

    void        init();

    QString     tbuf;
    QLineEditPrivate * d;
    int         cursorPos;
    int         offset;
    int         maxLen;
    int         markAnchor;
    int         markDrag;
    bool        cursorOn;
    bool        dragScrolling;
    bool        scrollingLeft;
    int         alignmentFlag;
    bool        ed;

    void updateOffset();
    int xPosToCursorPos( int ) const;
    void blinkOn();
    void makePixmap() const;

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

#endif // QLINEEDIT_H

Copyright 1999 Troll TechTrademarks
Qt version 2.0.2