示例 2：与动态副本的直接连接

由于动态副本只会影响请求器节点获取副本的方式，因此在源端不需要进行任何更改。因此，我们使用示例 1中显示的源端代码。

将副本生成添加到项目中。
由于副本是动态获取的，因此不要求有 .rep 文件，这与示例 1不同。

创建远程节点并将其连接到源主机节点。

此步骤的代码与示例 1中的代码没有变化。

QRemoteObjectNode repNode; // create remote object node
repNode.connectToNode(QUrl(QStringLiteral("local:replica"))); // connect with remote host node

获取远程源对象的副本。

在 main.cpp 中，我们使用 QSharedPointer 保留远程对象的副本，然后实例化一个请求器对象

#include <QCoreApplication>

#include "dynamicclient.h"

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QSharedPointer<QRemoteObjectDynamicReplica> ptr; // shared pointer to hold replica

    QRemoteObjectNode repNode;
    repNode.connectToNode(QUrl(QStringLiteral("local:replica")));

    ptr.reset(repNode.acquireDynamic("SimpleSwitch")); // acquire replica of source from host node

    DynamicClient rswitch(ptr); // create client switch object and pass replica reference to it

    return a.exec();
}

请求器类的完整声明和定义如下

dynamicclient.h

#ifndef _DYNAMICCLIENT_H
#define _DYNAMICCLIENT_H

#include <QObject>
#include <QSharedPointer>

#include <QRemoteObjectNode>
#include <qremoteobjectdynamicreplica.h>

class DynamicClient : public QObject
{
    Q_OBJECT
public:
    DynamicClient(QSharedPointer<QRemoteObjectDynamicReplica> ptr);
    ~DynamicClient() override = default;

Q_SIGNALS:
    void echoSwitchState(bool switchState);// this signal is connected with server_slot(..) slot of source object and echoes back switch state received from source

public Q_SLOTS:
    void recSwitchState_slot(bool); // Slot to receive source state
    void initConnection_slot(); // Slot to connect signals/slot on replica initialization

private:
    bool clientSwitchState; // holds received server switch state
    QSharedPointer<QRemoteObjectDynamicReplica> reptr;// holds reference to replica
 };

#endif

dynamicclient.cpp

#include "dynamicclient.h"

// constructor
DynamicClient::DynamicClient(QSharedPointer<QRemoteObjectDynamicReplica> ptr)
    : QObject(nullptr), clientSwitchState(false), reptr(ptr)
{
    //connect signal for replica valid changed with signal slot initialization
    QObject::connect(reptr.data(), &QRemoteObjectDynamicReplica::initialized, this,
                     &DynamicClient::initConnection_slot);
}

// Function to initialize connections between slots and signals
void DynamicClient::initConnection_slot()
{
    // Connect source replica signal currStateChanged() with client's
    // recSwitchState() slot to receive source's current state:
    QObject::connect(reptr.data(), SIGNAL(currStateChanged(bool)), this,
                     SLOT(recSwitchState_slot(bool)));
    // Connect client's echoSwitchState(..) signal with replica's
    // server_slot(..) to echo back received state:
    QObject::connect(this, SIGNAL(echoSwitchState(bool)), reptr.data(), SLOT(server_slot(bool)));
}

void DynamicClient::recSwitchState_slot(bool value)
{
    // Use replica property to get "currState" from source:
    clientSwitchState = reptr->property("currState").toBool();
    qDebug() << "Received source state " << value << clientSwitchState;
    // Emit signal to echo received state back to server:
    Q_EMIT echoSwitchState(clientSwitchState);
}

当与源端示例一起运行时，输出与示例 1相同。