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()
  • 31 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
  • 11 static public members inherited from QObject
  • 9 protected functions 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}{Standalone Example} shows how this can be done using Qt WebSockets. Qt WebKit implements this interface internally and uses the native WebKit IPC mechanism to transmit messages to HTML clients.

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)

Send 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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