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# qlineedit.h

This is the verbatim text of the qlineedit.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /**********************************************************************
    ** $Id: qt/qlineedit.h   3.1.1   edited Nov 7 16:55 $
    **
    ** Definition of QLineEdit widget class
    **
    ** Created : 941011
    **
    ** Copyright (C) 1992-2000 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the widgets module of the Qt GUI Toolkit.
    **
    ** This file may be distributed under the terms of the Q Public License
    ** as defined by Trolltech AS of Norway and appearing in the file
    ** LICENSE.QPL included in the packaging of this file.
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
    ** licenses may use this file in accordance with the Qt Commercial License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about Qt Commercial License Agreements.
    ** See http://www.trolltech.com/qpl/ for QPL licensing information.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    **********************************************************************/

    #ifndef QLINEEDIT_H
    #define QLINEEDIT_H

    struct QLineEditPrivate;

    class QValidator;
    class QPopupMenu;

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

    #ifndef QT_NO_LINEEDIT

    class QTextParagraph;
    class QTextCursor;

    class Q_EXPORT QLineEdit : public QFrame
    {
        Q_OBJECT
        Q_ENUMS( EchoMode )
        Q_PROPERTY( QString text READ text WRITE setText )
        Q_PROPERTY( int maxLength READ maxLength WRITE setMaxLength )
        Q_PROPERTY( bool frame READ frame WRITE setFrame )
        Q_PROPERTY( EchoMode echoMode READ echoMode WRITE setEchoMode )
        Q_PROPERTY( QString displayText READ displayText )
        Q_PROPERTY( int cursorPosition READ cursorPosition WRITE setCursorPosition )
        Q_PROPERTY( Alignment alignment READ alignment WRITE setAlignment )
        Q_PROPERTY( bool edited READ edited WRITE setEdited )
        Q_PROPERTY( bool hasMarkedText READ hasMarkedText DESIGNABLE false )
        Q_PROPERTY( bool hasSelectedText READ hasSelectedText )
        Q_PROPERTY( QString markedText READ markedText DESIGNABLE false )
        Q_PROPERTY( QString selectedText READ selectedText )
        Q_PROPERTY( bool dragEnabled READ dragEnabled WRITE setDragEnabled )
        Q_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly )
        Q_PROPERTY( bool undoAvailable READ isUndoAvailable )
        Q_PROPERTY( bool redoAvailable READ isRedoAvailable )

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

        QString text() const;

        QString displayText() const;

        int maxLength() const;

        bool frame() const;

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

        bool isReadOnly() const;

        const QValidator * validator() const;

        QSize sizeHint() const;
        QSize minimumSizeHint() const;

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

        int alignment() const;

    #ifndef QT_NO_COMPAT
        void cursorLeft( bool mark, int steps = 1 ) { cursorForward( mark, -steps ); }
        void cursorRight( bool mark, int steps = 1 ) { cursorForward( mark, steps ); }
    #endif
        void cursorForward( bool mark, int steps = 1 );
        void cursorBackward( 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 hasSelectedText() const;
        QString selectedText() const;
        bool getSelection( int *start, int *end );

        bool isUndoAvailable() const;
        bool isRedoAvailable() const;

    #ifndef QT_NO_COMPAT
        bool hasMarkedText() const { return hasSelectedText(); }
        QString markedText() const { return selectedText(); }
    #endif

        void 	setPasswordChar( QChar c );
        QChar 	passwordChar() const;

        bool dragEnabled() const;
        int characterAt( int xpos, QChar *chr ) const;

    public slots:
        virtual void setText( const QString &);
        virtual void selectAll();
        virtual void deselect();
        virtual void clearValidator();
        virtual void insert( const QString &);
        virtual void clear();
        virtual void undo();
        virtual void redo();
        virtual void setMaxLength( int );
        virtual void setFrame( bool );
        virtual void setEchoMode( EchoMode );
        virtual void setReadOnly( bool );
        virtual void setValidator( const QValidator * );
        virtual void setFont( const QFont & );
        virtual void setPalette( const QPalette & );
        virtual void setSelection( int, int );
        virtual void setCursorPosition( int );
        virtual void setAlignment( int flag );
    #ifndef QT_NO_CLIPBOARD
        virtual void cut();
        virtual void copy() const;
        virtual void paste();
    #endif
        virtual void setDragEnabled( bool b );

    signals:
        void textChanged( const QString &);
        void returnPressed();
        void lostFocus();
        void selectionChanged();

    protected:
        bool event( QEvent * );
        void mousePressEvent( QMouseEvent * );
        void mouseMoveEvent( QMouseEvent * );
        void mouseReleaseEvent( QMouseEvent * );
        void mouseDoubleClickEvent( QMouseEvent * );
        void keyPressEvent( QKeyEvent * );
        void imStartEvent( QIMEvent * );
        void imComposeEvent( QIMEvent * );
        void imEndEvent( QIMEvent * );
        void focusInEvent( QFocusEvent * );
        void focusOutEvent( QFocusEvent * );
        void drawContents( QPainter *painter );
        void resizeEvent( QResizeEvent * );
    #ifndef QT_NO_DRAGANDDROP
        void dragEnterEvent( QDragEnterEvent * );
        void dragMoveEvent( QDragMoveEvent *e );
        void dragLeaveEvent( QDragLeaveEvent *e );
        void dropEvent( QDropEvent * );
    #endif
        void contextMenuEvent( QContextMenuEvent * );

    #ifndef QT_NO_COMPAT
        void repaintArea( int, int ) { update(); }
    #endif

        virtual QPopupMenu *createPopupMenu();
        void windowActivationChange( bool );

    private slots:
        void clipboardChanged();
        void blinkSlot();
    #ifndef QT_NO_DRAGANDDROP
        void doDrag();
    #endif
        void dragSlot();
        void popupActivated( int r );

    private:
        void init();
        void blinkOn();
        void updateOffset();
        void updateOffset( QTextParagraph *p, QTextCursor *c );
        void updateSelection();
        void removeSelectedText();
        void delOrBackspace( bool backspace );

        QLineEditPrivate * d;

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

    #endif // QT_NO_LINEEDIT

    #endif // QLINEEDIT_H