Working with QSystemInfo - System Information API - Part 1
Article Metadata
Code Example
Source file: Media:SystemInformation part1.zip
Article
Created: kiran10182
(08 Mar 2010)
Last edited: hamishwillee
(11 Oct 2012)
| ID | Creation date | 8-March-2010 | |
| Platform | S60 3rd Edition, FP1, FP2
S60 5th Edition |
Tested on devices | Nokia 5800 xPressMusic |
| Category | Qt | Subcategory | Qt Mobility API |
| Keywords (APIs, classes, methods, functions): QSystemInfo, QString, QStringList, QButton |
Tip:
- Please read this article before moving forward: Archived:Setting up environment for Qt Mobility API
- Setup Carbide.c++ IDE as explained in this article: Working with Carbide.c++ IDE for Qt Mobility APIs
Contents |
Overview
This is a part 1 of the QSystemInfo API which is a part of the System Information API from Qt Mobility project.
What is covered in QSystemInfo API Part 1
- It is a part of the System Information API.
- This article covers information about
- Available languages in the device
- Current language of the device
- Current country code of the device
Capabilities required
- None
UI design (.ui file)
Project configuration file (.Pro file)
- Add the Qt Mobility project configuration option in the .Pro file as shown below
CONFIG += mobility
MOBILITY += systeminfo
- Add Qt-specific configuration options in .pro file as shown below
QT += network
Implementing QSystemInfo API
- QSystemInfo API is a part of the QtMobility namespace. So declare the QtMobility namespace as shown below:
using namespace QtMobility;
Header file
#ifndef SYSTEMINFORMATION_H
#define SYSTEMINFORMATION_H
#include <QtGui/QWidget>
#include "ui_SystemInformation.h"
#include <qsysteminfo.h>
using namespace QtMobility;
class SystemInformation : public QWidget
{
Q_OBJECT
public:
SystemInformation(QWidget *parent = 0);
~SystemInformation();
public slots:
void displayCurrentCountryCode();
void displayCurrentLanguage();
void displayAvailableCountryCodes();
void resetAllFields();
private:
Ui::SystemInformation ui;
QSystemInfo* sysInfo;
};
#endif // SYSTEMINFORMATION_H
Source file
#include "SystemInformation.h"
SystemInformation::SystemInformation(QWidget *parent)
: QWidget(parent), sysInfo(NULL)
{
ui.setupUi(this);
sysInfo = new QSystemInfo();
QObject::connect(ui.curLanguageButton,
SIGNAL(clicked()),
this,
SLOT(displayCurrentLanguage()));
QObject::connect(ui.countryCodeButton,
SIGNAL(clicked()),
this,
SLOT(displayCurrentCountryCode()));
QObject::connect(ui.availableLanguagesButton,
SIGNAL(clicked()),
this,
SLOT(displayAvailableCountryCodes()));
QObject::connect(ui.resetButton,
SIGNAL(clicked()),
this,
SLOT(resetAllFields()));
}
SystemInformation::~SystemInformation()
{
delete sysInfo;
sysInfo = NULL;
}
void SystemInformation::displayCurrentCountryCode()
{
if(sysInfo)
{
QString str = sysInfo->currentCountryCode();
ui.countryCodeLabel->setText(str);
}
}
void SystemInformation::displayCurrentLanguage()
{
if(sysInfo)
{
QString str = sysInfo->currentLanguage();
ui.languageLabel->setText(str);
}
}
void SystemInformation::displayAvailableCountryCodes()
{
if(sysInfo)
{
QStringList list = sysInfo->availableLanguages();
ui.languageComboBox->addItems(list);
}
}
void SystemInformation::resetAllFields()
{
if(sysInfo)
{
ui.languageLabel->clear();
ui.countryCodeLabel->clear();
ui.languageComboBox->clear();
}
}
Output
Useful functions
- QStringList availableLanguages();
- QString currentCountryCode();
- QString currentLanguage();
Keywords
Headers
- #include <qsysteminfo.h>
Classes
- QSystemInfo
- QString
- QStringList
- QButton
Example Application
- A working example application is available to download from here: QSystemInfo part1.zip
Related articles
- Getting started with Qt Mobility APIs
- Archived:Setting up environment for Qt Mobility API
- Working with Carbide.c++ IDE for Qt Mobility APIs
- Working with QSystemInfo - System Information API - Part 2
- Working with QSystemDeviceInfo - System Information API - Part 1
- Working with QSystemStorageInfo - System Information API
- Working with QSystemDisplayInfo - System Information API
- Working with QSystemNetworkInfo - System Information API - Part 1
- Working with QSystemNetworkInfo - System Information API - Part 2
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