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Article Metadata

Code Example

Source file: Media:SystemStorageInfo.zip

Tested with

Devices(s): Nokia 5800 xPressMusic

Compatibility

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

Platform Security

Signing Required: Self-Signed

Capabilities: None

Article

Keywords: QSystemStorageInfo, QString, QStringList, QButton, QLabel, QComboBox

Created: kiran10182 (10 Mar 2010)

Last edited: hamishwillee (11 Oct 2012)

Overview

This article shows how to use QSystemStorageInfo API which is a part of the System Information API from Qt Mobility project.

What is covered in QSystemStorageInfo API

It is a part of the System Information API.
This article covers information about
- Available drives of the device
- Available disc space of the particular drive
- Total disc space of the particular drive
- Type of the particular drive

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

Implementing QSystemStorageInfo API

QSystemStorageInfo API is a part of the QtMobility namespace. So declare the QtMobility namespace as shown below:

using namespace QtMobility;

Header file

#ifndef SYSTEMSTORAGEINFO_H
#define SYSTEMSTORAGEINFO_H
 
#include <QtGui/QWidget>
#include "ui_SystemStorageInfo.h"
#include <qsysteminfo.h>
 
using namespace QtMobility;
class SystemStorageInfo : public QWidget
{
    Q_OBJECT
 
public:
	SystemStorageInfo(QWidget *parent = 0);
    ~SystemStorageInfo();
 
public slots:
	void listLogicalDrives();
	void listDriveInformation(int aDriveIndex);
	void resetAllFields();
 
private:
    Ui::SystemStorageInfo ui;
    QSystemStorageInfo* storageInfo;
};
 
#endif // SYSTEMSTORAGEINFO_H

Source file

#include "SystemStorageInfo.h"
 
SystemStorageInfo::SystemStorageInfo(QWidget *parent)
    : QWidget(parent), storageInfo(NULL)
{
	ui.setupUi(this);
 
	storageInfo = new QSystemStorageInfo();
 
	QObject::connect(ui.driveComboBox, 
					SIGNAL(currentIndexChanged(int)),
					this, 
					SLOT(listDriveInformation(int)));
	QObject::connect(ui.storageInfoButton, 
					SIGNAL(clicked()),
					this, 
					SLOT(listLogicalDrives()));	
	QObject::connect(ui.resetButton, 
					SIGNAL(clicked()),
					this, 
					SLOT(resetAllFields()));
}
 
SystemStorageInfo::~SystemStorageInfo()
{
	delete storageInfo;
}
 
void SystemStorageInfo::listLogicalDrives()
{
	if(ui.driveComboBox->count() > 1)
	{
		//this has been called previously and combo box contains data already
		ui.driveComboBox->showPopup();
		return;
	}
	QStringList list = storageInfo->logicalDrives();
	ui.driveComboBox->addItems(list);
	ui.driveComboBox->showPopup();
}
 
void SystemStorageInfo::listDriveInformation(int aDriveIndex)
{
	if(aDriveIndex == 0)
	{
		resetAllFields();
		return;
	}
	// Set available disc space label
	QString textValue = ui.driveComboBox->itemText(aDriveIndex);
	qlonglong availableSpace = storageInfo->availableDiskSpace(textValue);
	QString str = QString::number(availableSpace);
	ui.availabelDiscSpaceLabel->setText(str);
 
	// Set total disc space label
	qlonglong totalSpace = storageInfo->totalDiskSpace(textValue);
	str = QString::number(totalSpace);
	ui.totalDiscSpaceLabel->setText(str);
 
	// Set drive type label
	QString labelValue;
	QSystemStorageInfo::DriveType drvType = storageInfo->typeForDrive(textValue);
	switch(drvType)
	{
		case QSystemStorageInfo::NoDrive:
		{
			labelValue = ("No drive");
			break;
		}
		case QSystemStorageInfo::InternalDrive:
		{
			labelValue = ("Internal Drive");
			break;
		}
		case QSystemStorageInfo::RemovableDrive:
		{
			labelValue = ("Removable Drive");
			break;
		}
		case QSystemStorageInfo::RemoteDrive:
		{
			labelValue = ("Remote Drive");
			break;
		}
		case QSystemStorageInfo::CdromDrive:
		{
			labelValue = ("CD ROM Drive");
			break;
		}
		default:
		{
			break;
		}
	}
	ui.driveTypeLabel->setText(labelValue);
}
 
void SystemStorageInfo::resetAllFields()
{
	ui.driveComboBox->setCurrentIndex(0);
	ui.availabelDiscSpaceLabel->clear();
	ui.totalDiscSpaceLabel->clear();
	ui.driveTypeLabel->clear();
}

Output

Useful functions

QStringList logicalDrives ();
qlonglong availableDiskSpace ( const QString & volumeDrive );
qlonglong totalDiskSpace ( const QString & volumeDrive );
QSystemStorageInfo::DriveType typeForDrive ( const QString & driveVolume );

Headers

#include <qsysteminfo.h>

Classes

QSystemStorageInfo
QString
QStringList
QButton
QLabel
QComboBox

Example Application

A working example application is available to download from here: QSystemStorageInfo.zip

Reference links

Wiki

Wiki Resources

Main Platforms

Other

Natural Languages

Toolbox

Namespaces

Variants

Views

Actions

Contents

Working with QSystemStorageInfo - System Information API

Comments

Itapadar - Tried your App with Qt Creator, but showed some link errors

Kiran10182 - Use the latest Qt SDK with the latest Qt Mobility API support built in

Hamishwillee - If you retest ...