QDBusPendingCall Class ReferenceThe QDBusPendingCall class refers to one pending asynchronous call More... #include <QDBusPendingCall> Inherited by QDBusPendingCallWatcher and QDBusPendingReply. This class was introduced in Qt 4.5. Public Functions
Static Public Members
Detailed DescriptionThe QDBusPendingCall class refers to one pending asynchronous call A QDBusPendingCall object is a reference to a method call that was sent over D-Bus without waiting for a reply. QDBusPendingCall is an opaque type, meant to be used as a handle for a pending reply. In most programs, the QDBusPendingCall class will not be used directly. It can be safely replaced with the template-based QDBusPendingReply, in order to access the contents of the reply or wait for it to be complete. The QDBusPendingCallWatcher class allows one to connect to a signal that will indicate when the reply has arrived or if the call has timed out. It also provides the QDBusPendingCallWatcher::waitForFinished() method which will suspend the execution of the program until the reply has arrived. Note: If you create a copy of a QDBusPendingCall object, all information will be shared among the many copies. Therefore, QDBusPendingCall is an explicitly-shared object and does not provide a method of detaching the copies (since they refer to the same pending call) See also QDBusPendingReply, QDBusPendingCallWatcher, and QDBusAbstractInterface::asyncCall(). Member Function DocumentationQDBusPendingCall::QDBusPendingCall ( const QDBusPendingCall & other )Creates a copy of the other pending asynchronous call. Note that both objects will refer to the same pending call. QDBusPendingCall::~QDBusPendingCall ()Destroys this copy of the QDBusPendingCall object. If this copy is also the last copy of a pending asynchronous call, the call will be canceled and no further notifications will be received. There will be no way of accessing the reply's contents when it arrives. QDBusPendingCall QDBusPendingCall::fromCompletedCall ( const QDBusMessage & msg ) [static]Creates a QDBusPendingCall object based on the message msg. The message must be of type QDBusMessage::ErrorMessage or QDBusMessage::ReplyMessage (that is, a message that is typical of a completed call). This function is useful for code that requires simulating a pending call, but that has already finished. This function was introduced in Qt 4.6. See also fromError(). QDBusPendingCall QDBusPendingCall::fromError ( const QDBusError & error ) [static]Creates a QDBusPendingCall object based on the error condition error. The resulting pending call object will be in the "finished" state and QDBusPendingReply::isError() will return true. This function was introduced in Qt 4.6. See also fromCompletedCall(). QDBusPendingCall & QDBusPendingCall::operator= ( const QDBusPendingCall & other )Creates a copy of the other pending asynchronous call and drops the reference to the previously-referenced call. Note that both objects will refer to the same pending call after this function. If this object contained the last reference of a pending asynchronous call, the call will be canceled and no further notifications will be received. There will be no way of accessing the reply's contents when it arrives. X
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