QT实现在聊天室邀请其他用户的客户端服务端c++代码

以下是一个简单的基于QT的聊天室客户端和服务端的代码示例。该示例包含了邀请其他用户的功能。

客户端代码：

#include <QTcpSocket>
#include <QDataStream>
#include <QByteArray>

// 连接到服务器
void connectToServer(QString host, quint16 port)
{
    QTcpSocket *socket = new QTcpSocket(this);
    socket->connectToHost(host, port);

    connect(socket, SIGNAL(readyRead()), this, SLOT(readData()));
}

// 发送邀请
void invite(QString username)
{
    QByteArray block;
    QDataStream out(&block, QIODevice::WriteOnly);
    out << quint16(0) << QString("invite") << username;
    out.device()->seek(0);
    out << quint16(block.size() - sizeof(quint16));

    socket->write(block);
}

// 处理读取的数据
void readData()
{
    QDataStream in(socket);
    in.setVersion(QDataStream::Qt_5_10);

    if (blockSize == 0) {
        if (socket->bytesAvailable() < (int)sizeof(quint16))
            return;
        in >> blockSize;
    }

    if (socket->bytesAvailable() < blockSize)
        return;

    QString type;
    in >> type;

    if (type == "invite") {
        QString username;
        in >> username;
        // 处理邀请
    }

    blockSize = 0;
}

服务端代码：

#include <QTcpServer>
#include <QTcpSocket>
#include <QDataStream>
#include <QByteArray>

// 新连接到达
void newConnection()
{
    QTcpSocket *socket = server->nextPendingConnection();
    connect(socket, SIGNAL(readyRead()), this, SLOT(readData()));
}

// 处理读取的数据
void readData()
{
    QTcpSocket *socket = qobject_cast<QTcpSocket *>(sender());
    QDataStream in(socket);
    in.setVersion(QDataStream::Qt_5_10);

    if (blockSize == 0) {
        if (socket->bytesAvailable() < (int)sizeof(quint16))
            return;
        in >> blockSize;
    }

    if (socket->bytesAvailable() < blockSize)
        return;

    QString type;
    in >> type;

    if (type == "invite") {
        QString username;
        in >> username;
        // 处理邀请
    }

    blockSize = 0;
}

// 发送邀请
void sendInvite(QTcpSocket *socket, QString username)
{
    QByteArray block;
    QDataStream out(&block, QIODevice::WriteOnly);
    out << quint16(0) << QString("invite") << username;
    out.device()->seek(0);
    out << quint16(block.size() - sizeof(quint16));

    socket->write(block);
}

// 向指定用户发送邀请
void inviteUser(QString username)
{
    foreach (QTcpSocket *socket, clients) {
        if (socket->property("username").toString() == username) {
            sendInvite(socket, username);
            return;
        }
    }
}

// 向所有用户发送邀请
void inviteAllUsers()
{
    foreach (QTcpSocket *socket, clients) {
        sendInvite(socket, socket->property("username").toString());
    }
}

以上是一个简单的示例，具体实现方式可能因需求而异。