9月11日

使用绘制事件完成钟表的绘制

头文件

#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>
#include<QTcpSocket>
#include<QMessageBox>QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();private slots:void on_connectBtn_clicked();void connected_slot();void readyRead_slot();void on_sendBtn_clicked();void on_disConnectBtn_clicked();void disconnected_slot();private:Ui::Widget *ui;QTcpSocket *client;QString userName;
};
#endif // WIDGET_H

源文件

#include "widget.h"
#include "ui_widget.h"Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);//实例化客户端对象client = new QTcpSocket(this);connect(client,&QTcpSocket::connected,this,&Widget::connected_slot);connect(client,&QTcpSocket::readyRead,this,&Widget::readyRead_slot);connect(client,&QTcpSocket::disconnected,this,&Widget::disconnected_slot);
}Widget::~Widget()
{delete ui;
}void Widget::on_connectBtn_clicked()
{//获取ui界面上的数据QString ip = ui->ipEdit->text();quint16 port = ui->portEdit->text().toUInt();userName = ui->nameEdit->text();//调用套接字成员函数，连接服务器client->connectToHost(ip,port);}void Widget::connected_slot()
{QMessageBox::information(this,"成功","连接成功");ui->ipEdit->setEnabled(false);ui->nameEdit->setEnabled(false);ui->portEdit->setEnabled(false);ui->connectBtn->setEnabled(false);QString msg = userName + ":Ciallo～(∠·ω<)⌒☆";client->write(msg.toLocal8Bit());
}void Widget::readyRead_slot()
{//从套接字中读取数据QByteArray msg = client->readAll();//将读取下来的数据展示到ui界面上ui->msglistWidget->addItem(QString::fromLocal8Bit(msg));
}//消息发送
void Widget::on_sendBtn_clicked()
{//组织要发送的消息QString msg = userName + ":" + ui->msgEdit->text();//将消息发送给服务器client->write(msg.toLocal8Bit());//将消息展示到自己的界面上QListWidgetItem *item = new QListWidgetItem(msg);item->setTextAlignment(Qt::AlignRight);ui->msglistWidget->addItem(item);//清空消息发送框的内容ui->msgEdit->clear();
}//断开连接
void Widget::on_disConnectBtn_clicked()
{QString msg = userName + ":离开聊天室";client->write(msg.toLocal8Bit());//断开连接client->disconnectFromHost();}void Widget::disconnected_slot()
{QMessageBox::information(this,"提示","成功断开连接");ui->ipEdit->setEnabled(true);ui->nameEdit->setEnabled(true);ui->portEdit->setEnabled(true);ui->connectBtn->setEnabled(true);
}