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62 lines
1.6 KiB
62 lines
1.6 KiB
2 years ago
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#include "widget.h"
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#include "ui_widget.h"
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#include <QMessageBox>
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Widget::Widget(QWidget *parent) :
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QWidget(parent),
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ui(new Ui::Widget)
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{
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ui->setupUi(this);
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//1.socket对象
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tcpSocket = new QTcpSocket(this);
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}
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Widget::~Widget()
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{
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delete ui;
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}
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void Widget::on_btnConnect_clicked()
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{
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//2.打开连接
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tcpSocket->connectToHost(ui->editIpInput->text(),ui->editPortInput->text().toUInt());
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if(tcpSocket->waitForConnected(1000)){
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QMessageBox::information(this,"提示","连接成功");
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}else{
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QMessageBox::critical(this,"提示","连接失败");
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}
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//3.连接成功时连接函数
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//3.`connected()`这个信号在调用connectToHost()并成功建立连接之后发出。
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connect(tcpSocket,SIGNAL(connected()),this,SLOT(connected_Slot()));
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}
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//3.连接成功槽函数
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void Widget::connected_Slot(){
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//4.新数据时，连接函数
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//`readyRead()`有新数据到来时触发
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connect(tcpSocket,SIGNAL(readyRead()),this,SLOT(readyRead_Slot()));
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}
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//4.新数据时槽函数
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//发送数据到接收框
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void Widget::readyRead_Slot(){
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QString buff;
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buff = tcpSocket->readAll();
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ui->pteMessageRCV->appendPlainText(buff);
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}
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//5.发送数据槽函数
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void Widget::on_btnSend_clicked()
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{
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//toLocal8Bit()转化为字符数组，data()转化为字符指针
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tcpSocket->write(ui->editMessageSend->text().toLocal8Bit().data());
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}
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//6.关闭连接槽函数
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void Widget::on_btnClose_clicked()
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{
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tcpSocket->close();
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//tcpSocket->disconnectFromHost();
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QMessageBox::information(this,"提示","断开连接");
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}
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