Archived:How to clone user interface objects and inheriting common properties in Qt

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16 Sep
2009

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Qt Quick should be used for all UI development on mobile devices. The approach described in this article (based on QWidget) is deprecated.

Article Metadata

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Tested with

Devices(s): S60 Emulator

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Compatibility

Platform(s): S60 3rd Edition, FP1, FP2
S60 5th Edition

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Article

Keywords: QListWidget,clone(),QListWidgetItem

Created: mind_freak (13 Jul 2009)

Last edited: hamishwillee (11 Oct 2012)

Overview

Sometimes we want to build many user interface widgets that share common properties, for example: same font type, same icons, same colors, etc. In such cases, we can create the "template object" first and after that use the clone() method to create copies that have all the properties set up first.

Source Code

#include <QtGui/QApplication>
#include "list.h"
#include<QListWidget>
#include<QListWidgetItem>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QListWidget listWidget;
 
    QListWidgetItem * patt = new QListWidgetItem(this); // Making the initial pattern
    patt->setFont(QFont("Times"));
    patt->setTextColor(Qt::blue);
    patt->setBackgroundColor(Qt::yellow);
 
    QListWidgetItem * name = patt->clone(); // cloning of pattern
    name->setText("N97");
    listWidget.insertItem(0, name);
 
    name = patt->clone(); // cloning of pattern
    name->setText("Nokia");
    listWidget.insertItem(0, name);
 
    name = patt;
    name->setText("OT for S60");
    listWidget.insertItem(0, name);
 
    listWidget.sortItems();
    listWidget.show();
    return a.exec();
}