tcpserver

 class tcpserver:public QObject
 {
     Q_OBJECT
 public:
     explicit tcpserver(QObject * parent);
     ~tcpserver();
 signals:
     
 }

• 构造函数

 tcpserver::tcpserver(QObject *parent):QObject(parent)
 {
     tcpNetInit();
 }

• 析构函数

 tcpserver::~tcpserver()
 {
     server->close();
     server->deleteLater();
 }

• 初始化

 void tcpserver::tcpNetInit()
 {
     server = new QTcpServer;
     
     localPort = 8080;
     
     server->listen(QHostAddress::Any, localPort);
     
     connect(server,SIGNAL(newConnect()),this,SLOT(serverNewConnect()));
 }

• 新连接

 void tcpserver::serverNewConnect()
 {
     socket = server->nextPendingConnection();
     
     connect(socket,SIGNAL(readyRead()),this,SLOT(socketReadData()));
     
     connect(socket,SIGNAL(disconnected()),this,SLOT(socketDisconnected()));
 }

• 读数据信号槽

 void tcpserver::socketReadData()
 {
     QByteArray buffer;
     buffer = socket->readAll();
     
     emit tcpDataSignal(buffer);
 }

• 读到数据信号

 public signal:
     void tcpDataSignal(QByteArray buffer);

• 断开连接槽函数

 void tcpserver::socketDisconnected()
 {
     
 }

• 写数据槽函数

 void tcpserver::socketWrite(const QByteArray &data)
 {
     socket->write(data);
     
     socket->flush();
 }

• QtLabel

 QLabel *label = new QLabel(this);
 label->resize(300,400);
 label->setFrameStyle(QFrame::Panel | QFrame::Sunken);
 label->setText("first line\nsecond line");
 label->setAlignment(Qt::AlignBottom | Qt::AlignR)

• c++类需加后分号 ；

windows 查看端口号命令

 netstat -ano

spring-boot -> resource ->static 目录下即为页面根目录

 import QtQuick 2.0
 ​
 Rectangle{
     id: page
     width: 320; height: 480;
     color:"lightgray"
     
     Text{
         id: helloText
         text: "Hello world!"
         y: 30
         anchors.horizontalCenter: page.horizontalCenter
         font.pointSize: 24; font.bold: true
     }
 }

 qmlscene turotial1.qml

qtcreater

1. 环境变量 qt_msvc编译器

2. build & run \ kits \ 编译器与调试器

3. Projects \ General 取消Shadow build

4.