DeviceWatcher

Watches and alerts the program when a USB device is plugged in or unplugged. More...

Public Member Functions
	DeviceWatcher (QObject *parent=0)
	Constructs a DeviceWatcher with the given parent object.
void	appendEventReceiver (QObject *receiver)
	Appends an additional event receiver that will be notified of device change events.
void	deviceAdded (const QString &dev)
	Emitted when a new device is added to the system.
void	deviceChanged (const QString &dev)
	Emitted when a device state changes, such as when unmounting.
void	deviceRemoved (const QString &dev)
	Emitted when a device is removed from the system.
bool	isRunning () const
	Checks whether the watcher is currently monitoring for device changes.
bool	start ()
	Starts watching for device changes.
bool	stop ()
	Stops watching for device changes.

Static Public Member Functions
static DeviceWatcher &	DefaultWatcher ()
	Returns the singleton default DeviceWatcher instance.

Protected Attributes
DeviceWatcherPrivate *	d_ptr
	Private implementation pointer for platform-specific watching logic.
bool	running
	Whether the watcher is currently active.

Detailed Description

Watches and alerts the program when a USB device is plugged in or unplugged.

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Definition at line 11 of file DeviceWatcher.h.

Constructor & Destructor Documentation

DeviceWatcher()

DeviceWatcher::DeviceWatcher ( QObject * parent = 0 )

explicit

Constructs a DeviceWatcher with the given parent object.

Parameters

[in]

parent

The parent QObject, or nullptr for no parent.

References DeviceWatcher().

Referenced by DeviceWatcher(), and DefaultWatcher().

Member Function Documentation

appendEventReceiver()

void DeviceWatcher::appendEventReceiver

(

QObject *

receiver

)

Appends an additional event receiver that will be notified of device change events.

Parameters

[in]

receiver

The QObject to receive device change events.

DefaultWatcher()

DeviceWatcher & DeviceWatcher::DefaultWatcher ( )

static

Returns the singleton default DeviceWatcher instance.

Returns

A reference to the default DeviceWatcher.

References DeviceWatcher().

deviceAdded()

void DeviceWatcher::deviceAdded

(

const QString &

dev

)

Emitted when a new device is added to the system.

Parameters

[in]

dev

The device identifier string.

deviceChanged()

void DeviceWatcher::deviceChanged

(

const QString &

dev

)

Emitted when a device state changes, such as when unmounting.

Parameters

[in]

dev

The device identifier string.

deviceRemoved()

void DeviceWatcher::deviceRemoved

(

const QString &

dev

)

Emitted when a device is removed from the system.

Parameters

[in]

dev

The device identifier string.

isRunning()

bool DeviceWatcher::isRunning

(

)

const

Checks whether the watcher is currently monitoring for device changes.

Returns

True if the watcher is running.

start()

bool DeviceWatcher::start

(

)

Starts watching for device changes.

Returns

True if watching was successfully started.

stop()

bool DeviceWatcher::stop

(

)

Stops watching for device changes.

Returns

True if watching was successfully stopped.

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The documentation for this class was generated from the following file:

• Widgets/Headers/DeviceWatcher.h