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

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Archived.pngArchived: This article is archived because it is not considered relevant for third-party developers creating commercial solutions today. If you think this article is still relevant, let us know by adding the template {{ReviewForRemovalFromArchive|user=~~~~|write your reason here}}.

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
Tested with
Devices(s): S60 Emulator
Compatibility
Platform(s): S60 3rd Edition, FP1, FP2
S60 5th Edition
Symbian
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();
}
This page was last modified on 11 October 2012, at 04:14.
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