diff -r dee5afe5301f -r 3f74d0d4af4c doc/src/snippets/code/doc_src_q3ptrdict.qdoc --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/doc/src/snippets/code/doc_src_q3ptrdict.qdoc Thu Apr 08 14:19:33 2010 +0300 @@ -0,0 +1,107 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [0] +Q3PtrDict fields; // void* keys, char* values + +QLineEdit *le1 = new QLineEdit( this ); +le1->setText( "Simpson" ); +QLineEdit *le2 = new QLineEdit( this ); +le2->setText( "Homer" ); +QLineEdit *le3 = new QLineEdit( this ); +le3->setText( "45" ); + +fields.insert( le1, "Surname" ); +fields.insert( le2, "Forename" ); +fields.insert( le3, "Age" ); + +Q3PtrDictIterator it( fields ); +for( ; it.current(); ++it ) + cout << it.current() << endl; +cout << endl; + +if ( fields[le1] ) // Prints "Surname: Simpson" + cout << fields[le1] << ": " << le1->text() << endl; +if ( fields[le2] ) // Prints "Forename: Homer" + cout << fields[le2] << ": " << le2->text() << endl; + +fields.remove( le1 ); // Removes le1 from the dictionary +cout << le1->text() << endl; // Prints "Simpson" +//! [0] + + +//! [1] +Q3PtrDict dict; + ... +if ( dict.find( key ) ) + dict.remove( key ); +dict.insert( key, item ); +//! [1] + + +//! [2] +Q3PtrDict fields; + +QLineEdit *le1 = new QLineEdit( this ); +le1->setText( "Simpson" ); +QLineEdit *le2 = new QLineEdit( this ); +le2->setText( "Homer" ); +QLineEdit *le3 = new QLineEdit( this ); +le3->setText( "45" ); + +fields.insert( le1, "Surname" ); +fields.insert( le2, "Forename" ); +fields.insert( le3, "Age" ); + +Q3PtrDictIterator it( fields ); +for( ; it.current(); ++it ) { + QLineEdit *le = (QLineEdit)it.currentKey(); + cout << it.current() << ": " << le->text() << endl; +} +cout << endl; + +// Output (random order): +// Forename: Homer +// Age: 45 +// Surname: Simpson +//! [2] + +