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QWebChannelAbstractTransport Class

Communication channel between the C++ QWebChannel server and a HTML/JS client. More...

Header: #include <QWebChannelAbstractTransport>
qmake: QT += webchannel
Since: Qt 5.4
Inherits: QObject

Public Functions

QWebChannelAbstractTransport(QObject *parent = Q_NULLPTR)
virtual ~QWebChannelAbstractTransport()
  • 33 public functions inherited from QObject

Public Slots

virtual void sendMessage(const QJsonObject &message) = 0
  • 1 public slot inherited from QObject


void messageReceived(const QJsonObject &message, QWebChannelAbstractTransport *transport)

Additional Inherited Members

  • 1 property inherited from QObject
  • 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

Communication channel between the C++ QWebChannel server and a HTML/JS client.

Users of the QWebChannel must implement this interface and connect instances of it to the QWebChannel server for every client that should be connected to the QWebChannel. The Qt WebChannel Standalone Example shows how this can be done using Qt WebSockets.

Note: The JSON message protocol is considered internal and might change over time.

See also Qt WebChannel Standalone Example.

Member Function Documentation

QWebChannelAbstractTransport::QWebChannelAbstractTransport(QObject *parent = Q_NULLPTR)

Constructs a transport object with the given parent.

[virtual] QWebChannelAbstractTransport::~QWebChannelAbstractTransport()

Destroys the transport object.

[signal] void QWebChannelAbstractTransport::messageReceived(const QJsonObject &message, QWebChannelAbstractTransport *transport)

This signal must be emitted when a new JSON message was received from the remote client. The transport argument should be set to this transport object.

[pure virtual slot] void QWebChannelAbstractTransport::sendMessage(const QJsonObject &message)

Sends a JSON message to the remote client. An implementation would serialize the message and transmit it to the remote JavaScript client.

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