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Revision as of 10:33, 9 September 2009 by taaidant (Talk | contribs)

Using resources in Qt

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Article Metadata
Tested with
Devices(s): N97
Compatibility
Platform(s): Qt
Symbian
Article
Keywords: Qt, resources
Created: (09 Sep 2009)
Last edited: taaidant (09 Sep 2009)

Contents

Overview

This snippet shows how to add and reference resources in Qt.

Preconditions

Using resources in Qt

QRE.pro

Adding resource file to project file.

#  Copyright (c) 2009 Nokia Corporation
TEMPLATE = app
TARGET = QRE
QT += core \
gui
SOURCES += main.cpp
# This is how the qre.qrc is added to the project.
RESOURCES += qre.qrc

qre.qrc

Adding resources to resource file.

<!-- Copyright (c) 2009 Nokia Corporation  -->
<RCC>
<qresource prefix="/" >
<file>qt-logo.png</file>
</qresource>
</RCC>

qt-logo.png

Qt-logo.png

main.cpp

Referencing resources from the code.

/*
* Copyright (c) 2009 Nokia Corporation
*/

#include <QtGui>
#include <QApplication>
 
int main(int argc, char *argv[]) {
QApplication a(argc, argv);
/* QMainWindow as our window */
QMainWindow* w = new QMainWindow;
/* QFrame as our centralWidget */
QFrame* centralW = new QFrame(w);
w->setCentralWidget(centralW);
/* QVBoxLayout as our central widgets layout */
QVBoxLayout* layout = new QVBoxLayout(centralW);
centralW->setLayout(layout);
 
/* QLabel is used as our logo container. */
QLabel* qtLogoContainer = new QLabel;
/* QPixmap is used to load the image from resources
* defined in qre.qrc file. */

qtLogoContainer->setPixmap(QPixmap(":/qt-logo.png"));
/* To get the logo shown we need to add the container containing
* the logo to the layout. */

layout->addWidget(qtLogoContainer);
 
/* We'll display the window maximized. */
w->showMaximized();
/* Run till the execution ends. */
int returnValue = a.exec();
/* Flag the window to be deleted.*/
w->deleteLater();
/* Return the execution return value.*/
return returnValue;
}

Postconditions

Now you know how to add and reference resources in Qt.

QRE.png

See also

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