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Represents one message sent or received over the DBus bus. More...
#include <QDBusMessage>
Represents one message sent or received over the DBus bus.
This object can represent any of four different types of messages possible on the bus (see MessageType)
Objects of this type are created with the static functions signal or methodCall. Method return values and errors are sent using the sendError() and sendReply() functions and are only available on received method calls.
The possible message types:
Constant | Value | Description |
---|---|---|
QDBusMessage::MethodCallMessage | 1 | a message representing an outgoing or incoming method call |
QDBusMessage::SignalMessage | 4 | a message representing an outgoing or incoming signal emission |
QDBusMessage::ReplyMessage | 2 | a message representing the return values of a method call |
QDBusMessage::ErrorMessage | 3 | a message representing an error condition in response to a method call |
QDBusMessage::InvalidMessage | 0 | an invalid message: this is never set on messages received from D-Bus |
Constructs an empty, invalid QDBusMessage object.
See also methodCall() and signal().
Constructs a copy of the object given by other.
Note: QDBusMessage objects are shared. Modifications made to the copy will affect the original one as well. See setDelayedReply() for more information.
Disposes of the object and frees any resources that were being held.
Appends the argument arg to the list of arguments to be sent over D-BUS in a method call or signal emission.
Returns the list of arguments that are going to be sent or were received from D-BUS.
See also setArguments().
Returns the argument at position index in the argument list. The value of index must be larger than or equal to 0 and less than argumentCount(). This is equivalent to calling QList::at() on the value returned by arguments().
Returns the connection this message was received on or an unconnected QDBusConnection object if this isn't a message that has been received.
Returns the number of arguments that were received from D-BUS. The value returned from this function is the size of the QList that is returned by arguments().
Returns the interface of the method being called (in the case of a method call) or of the signal being received from.
Returns the delayed reply flag, as set by setDelayedReply(). By default, this flag is false, which means QtDBus will generate automatic replies when necessary.
Returns the flag that indicates if this message should see a reply or not. This is only meaningful for MethodCall messages: any other kind of message cannot have replies and this function will always return false for them.
Returns the name of the signal that was emitted, the name of the error that was received or the name of the method that was called.
Constructs a new DBus message representing a method call. A method call always informs its destination address (service, path, interface and method).
The DBus bus allows calling a method on a given remote object without specifying the destination interface, if the method name is unique. However, if two interfaces on the remote object export the same method name, the result is undefined (one of the two may be called or an error may be returned).
When using DBus in a peer-to-peer context (i.e., not on a bus), the service parameter is optional.
The QDBusObject and QDBusInterface classes provide a simpler abstraction to synchronous method calling.
This function returns a QDBusMessage object that can be sent with QDBusConnection::call().
Returns the path of the object that this message is being sent to (in the case of a method call) or being received from (for a signal).
Constructs a D-BUS message representing an error condition described by the name parameter and sends it. The msg parameter is optional and may contain a human-readable description of the error.
This is an overloaded member function, provided for convenience.
Constructs a D-BUS message representing an error condition described by the error parameter and sends it.
Constructs a new D-BUS message representing the return values from a called method and sends it to the caller. The arguments list contains the arguments to be returned.
This is an overloaded member function, provided for convenience.
Constructs a new D-BUS message representing the return values from a called method and sends it to the caller. The arg value will be sent to the caller as a return value.
Returns the name of the service or the bus address of the remote method call.
Sets the arguments that are going to be sent over D-BUS to arguments. Those will be the arguments to a method call or the parameters in the signal.
See also arguments().
Sets the flag indicating whether the message will be replied later or if an automatic reply should be generated by QtDBus.
In D-BUS, all method calls must generate a reply to the caller, unless the caller explicitly indicates otherwise (see isReplyRequired()). QtDBus automatically generates such replies for any slots being called, but it also allows slots to indicate whether they will take responsibility of sending the reply at a later time, after the function has finished processing.
See QtDBus Delayed Replies for more information/
See also isDelayedReply.
Constructs a new DBus message representing a signal emission. A DBus signal is emitted from one application and is received by all applications that are listening for that signal from that interface.
The signal will be constructed to represent a signal coming from the path path, interface interface and signal name name.
The QDBusMessage object that is returned can be sent with QDBusConnection::send().
Returns the signature of the signal that was received or for the output arguments of a method call.
Returns the message type.
Appends the argument arg to the list of arguments to be sent over D-BUS in a method call or signal emission.
See also append().
Appends the argument arg to the list of arguments to be sent over D-BUS in a method call or signal emission.
See also append().
Copies the contents of the object given by other.
Note: QDBusMessage objects are shared. Modifications made to the copy will affect the original one as well. See setDelayedReply() for more information.
Copyright © 2006 Trolltech | Trademarks | Qt 4.2.0-snapshot-20060701 |