Qt实现桌面版QQ软件

先来看下效果

再上源代码

头文件

#include <QPushButton>

#include <QVBoxLayout>

#include <QHBoxLayout>

#include <QCloseEvent>

#include <QApplication>

#include <QDateTime>

class ClientWindow : public QWidget

{

    Q_OBJECT

public:

    ClientWindow(QWidget *parent = nullptr);

    ~ClientWindow();

protected:

    void closeEvent(QCloseEvent *event) override;

private slots:

    void onConnectClicked();

    void onDisconnectClicked();

    void onSendClicked();

    void onConnected();

    void onMessageReceived(QString message);

    void onDisconnected();

    void onExitClicked();

private:

    QTcpSocket* socket;

    QTextEdit* logEdit;

    QLineEdit* inputEdit;

    QLineEdit* hostEdit;

    QLineEdit* portEdit;

    QPushButton* connectButton;

    QPushButton* disconnectButton;

};

#endif // CLIENTWINDOW_H

CPP代码

#include "clientwindow.h"

ClientWindow::ClientWindow(QWidget *parent) : QWidget(parent)

{

    // 设置窗口属性

    setMinimumSize(800, 600);

    setFixedSize(800, 600);

    //this->setWindowIcon(QIcon(":/new/prefix1/images/tcpserver.ico")); // 需要添加图标资源

    // 初始化样式表

   QString styleSheet = R"(QWidget{background-color: #f5f5f5;font-family: 'Segoe UI', Arial, sans-serif;} 

        QTextEdit {background-color: #ffffff;border: 2px solid #1e90ff; border-radius: 8px; padding: 10px; font-size: 14px; color: #333333;selection-background-color: #1e90ff;} 

        QLineEdit {background-color: #ffffff; border: 2px solid #cccccc; border-radius: 6px; padding: 8px; font-size: 14px; min-height: 20px;} 

        QLineEdit:focus {border-color: #1e90ff;}  

       QPushButton {background-color: #1e90ff; color: white; border: none; border-radius: 6px; padding: 10px 20px; font-size: 14px; min-width: 80px;}  

       QPushButton:hover {background-color: #0066cc;}  

       QPushButton:disabled { background-color: #cccccc; color: #666666; }  

       QPushButton#exitButton { background-color: #ff4444; }  

       QPushButton#exitButton:hover { background-color: #cc0000;} )";

        setStyleSheet(styleSheet);

   QString styleSheet1 = R"(QLineEdit {background-color: #ffffff;border: 2px solid #cccccc; border-radius: 6px; padding: 8px; font-size: 14px; min-height: 100px; } 

           QLineEdit:focus { border-color: #1e90ff; })";

    // UI组件初始化

    hostEdit = new QLineEdit("localhost", this);

    portEdit = new QLineEdit("12345", this);

    connectButton = new QPushButton("Connect", this);

    disconnectButton = new QPushButton("Disconnect", this);

    logEdit = new QTextEdit(this);

    inputEdit = new QLineEdit(this);

    inputEdit->setStyleSheet(styleSheet1);

    QPushButton* sendButton = new QPushButton("Send", this);

    QPushButton* exitButton = new QPushButton("Exit", this);

   exitButton->setObjectName("exitButton");

    // 设置组件属性

    logEdit->setReadOnly(true);

    logEdit->setPlaceholderText("Message log...");

    inputEdit->setPlaceholderText("Type your message here...");

    portEdit->setFixedWidth(100);

    hostEdit->setPlaceholderText("Server address");

    portEdit->setPlaceholderText("Port");

    disconnectButton->setEnabled(false);

    // 布局设置

    QVBoxLayout* mainLayout = new QVBoxLayout;

    mainLayout->setSpacing(15);

    mainLayout->setContentsMargins(20, 20, 20, 20);

    // 连接信息布局

    QHBoxLayout* connLayout = new QHBoxLayout;

    connLayout->addWidget(hostEdit);

    connLayout->addWidget(portEdit);

    connLayout->addWidget(connectButton);

    connLayout->addWidget(disconnectButton);

    connLayout->setSpacing(10);

    // 按钮布局

    QHBoxLayout* buttonLayout = new QHBoxLayout;

    buttonLayout->addStretch();

    buttonLayout->addWidget(sendButton);

    buttonLayout->addWidget(exitButton);

    buttonLayout->setSpacing(15);

    // 添加所有布局

    mainLayout->addLayout(connLayout);

    mainLayout->addWidget(logEdit);

    mainLayout->addWidget(inputEdit);

    mainLayout->addLayout(buttonLayout);

    // 设置布局比例

    mainLayout->setStretch(0, 0);

    // 连接栏

    mainLayout->setStretch(1, 1);

    // 消息记录（可伸缩）

    mainLayout->setStretch(2, 0);

    // 输入框

    mainLayout->setStretch(3, 0);

    // 按钮栏

    setLayout(mainLayout);

    // 网络组件初始化

    socket = new QTcpSocket(this);

    // 连接信号槽（保持原有功能不变）

   connect(connectButton, &QPushButton::clicked, this, &ClientWindow::onConnectClicked);

   connect(disconnectButton, &QPushButton::clicked, this, &ClientWindow::onDisconnectClicked);

  connect(sendButton, &QPushButton::clicked, this, &ClientWindow::onSendClicked);

  connect(exitButton, &QPushButton::clicked, this, &ClientWindow::onExitClicked);

  connect(socket, &QTcpSocket::connected, this, &ClientWindow::onConnected);

 connect(socket, &QTcpSocket::disconnected, this, &ClientWindow::onDisconnected);

// connect(socket, QValid of &QTcpSocket::error, this, [this](QAbstractSocket::SocketError)

//  {

//              logEdit->append("Error: " + socket->errorString());

//  }

//  )

//  ;

  connect(socket, &QTcpSocket::readyRead, [this]

  {

              QByteArray data = socket->readAll();

              onMessageReceived(QString::fromUtf8(data));

  }

  );

}

void ClientWindow::onExitClicked()

{

    if (socket->state() != QAbstractSocket::UnconnectedState)

    {

         socket->abort();

    }

    qApp->quit();  // 安全退出整个应用程序

}

ClientWindow::~ClientWindow()

{

    if (socket->state() != QAbstractSocket::UnconnectedState)

    {

        socket->abort();

    }

}

void ClientWindow::closeEvent(QCloseEvent *event)

{

    if (socket->state() != QAbstractSocket::UnconnectedState)

    {

        socket->abort();

    }

    event->accept();

}

void ClientWindow::onConnectClicked()

{

    bool ok;

    int port = portEdit->text().toInt(&ok);

    if (!ok)

    {

        logEdit->append("Invalid port number!");

        return;

    }

    socket->connectToHost(hostEdit->text(), port);

    connectButton->setEnabled(false);

    disconnectButton->setEnabled(true);

}

void ClientWindow::onDisconnectClicked()

{

    if (socket->state() == QAbstractSocket::ConnectedState)

    {

        socket->disconnectFromHost();

    }

    connectButton->setEnabled(true);

    disconnectButton->setEnabled(false);

}

void ClientWindow::onSendClicked()

{

    // 获取当前日期时间

    QDateTime currentDateTime = QDateTime::currentDateTime();

    // 转换为字符串（格式：yyyy-MM-dd hh:mm:ss）

    QString dateTimeString = currentDateTime.toString("yyyy-MM-dd hh:mm:ss");

    QString message = inputEdit->text();

    if (!message.isEmpty() && socket->state() == QAbstractSocket::ConnectedState)

    {

        socket->write(message.toUtf8());

        logEdit->append("["+dateTimeString+" Me]: "+ message);

        inputEdit->clear();

    }

}

void ClientWindow::onConnected()

{

    logEdit->append("System prompt: Connected to server.");

}

void ClientWindow::onMessageReceived(QString message)

{

    // 获取当前日期时间

    QDateTime currentDateTime = QDateTime::currentDateTime();

    // 转换为字符串（格式：yyyy-MM-dd hh:mm:ss）

    QString dateTimeString = currentDateTime.toString("yyyy-MM-dd hh:mm:ss");

    logEdit->append("["+dateTimeString+" Server]: " + message);

}

void ClientWindow::onDisconnected()

{

    logEdit->append("System prompt: Disconnected from server.");

    connectButton->setEnabled(true);

    disconnectButton->setEnabled(false);

}