QUsbInfo Class
This class handles hotplug and device detection. More...
| Header: | #include <QUsbInfo> |
| qmake: | QT += usb |
| Inherits: | QObject |
Note: All functions in this class are reentrant.
Properties
- logLevel : QUsbDevice::LogLevel
- 1 property inherited from QObject
Public Functions
| QUsbInfo(QObject *parent = Q_NULLPTR) | |
| ~QUsbInfo(void) | |
| int | findDevice(const QUsbDevice::Id &id, const QUsbDevice::IdList &list) const |
| QUsbDevice::IdList | getPresentDevices() const |
| bool | isPresent(const QUsbDevice::Id &id) const |
| QUsbDevice::LogLevel | logLevel() const |
| void | setLogLevel(QUsbDevice::LogLevel level) |
- 32 public functions inherited from QObject
Public Slots
| bool | addDevice(const QUsbDevice::Id &id) |
| bool | removeDevice(const QUsbDevice::Id &id) |
- 1 public slot inherited from QObject
Signals
| void | deviceInserted(QUsbDevice::IdList list) |
| void | deviceRemoved(QUsbDevice::IdList list) |
- 2 signals inherited from QObject
Protected Slots
| void | checkDevices() |
| void | monitorDevices(const QUsbDevice::IdList &list) |
Additional Inherited Members
- 1 public variable inherited from QObject
- 10 static public members inherited from QObject
- 9 protected functions inherited from QObject
- 2 protected variables inherited from QObject
Detailed Description
This class handles hotplug and device detection.
Handles USB events and searching. Can be used to monitor events for a list of devices or all system devices.
See also QUsbDevice.
Property Documentation
logLevel : QUsbDevice::LogLevel
This property holds the log level for hotplug/detection.
Access functions:
| QUsbDevice::LogLevel | logLevel() const |
| void | setLogLevel(QUsbDevice::LogLevel level) |
Member Function Documentation
QUsbInfo::QUsbInfo(QObject *parent = Q_NULLPTR)
Default constructs an instance of QUsbInfo.
QUsbInfo::~QUsbInfo(void)
Destroys the instance of QUsbInfo.
[slot] bool QUsbInfo::addDevice(const QUsbDevice::Id &id)
Add an id device to the list.
Returns false if device was already in the list, else true.
[protected slot] void QUsbInfo::checkDevices()
Check devices present in system.
This gets called by the internal timer.
[signal] void QUsbInfo::deviceInserted(QUsbDevice::IdList list)
This is signal is emited when one or more new devices are detected, providing a list.
[signal] void QUsbInfo::deviceRemoved(QUsbDevice::IdList list)
This is signal is emited when one or more new devices are removed, providing a list.
int QUsbInfo::findDevice(const QUsbDevice::Id &id, const QUsbDevice::IdList &list) const
Search an id device in a device list.
Return index of the filter, returns -1 if not found.
QUsbDevice::IdList QUsbInfo::getPresentDevices() const
Gets a list of devices present in the system.
bool QUsbInfo::isPresent(const QUsbDevice::Id &id) const
Check if id device is present.
Return bool true if present.
QUsbDevice::LogLevel QUsbInfo::logLevel() const
Get current log level.
Note: Getter function for property logLevel.
See also setLogLevel().
[protected slot] void QUsbInfo::monitorDevices(const QUsbDevice::IdList &list)
Add a list to monitor.
[slot] bool QUsbInfo::removeDevice(const QUsbDevice::Id &id)
Remove id device from the list.
Return bool false if device was not in the list, else true.
void QUsbInfo::setLogLevel(QUsbDevice::LogLevel level)
Set log level (only hotplug/detection).
Note: Setter function for property logLevel.
See also logLevel().