My dedicated QQ functions (1)

Begin

Previously, I only summarized the UI processing of transparent, borderless, and movable windows. In order to provide some learning materials to some students, I would like to summarize some functional points.

Principle: less nonsense and more code.

 

Login window

Log on to tcpsocket. If you have to ask why I am not a UDP socket, I can only say that TCP is reliable.

 

Login

After setting the IP port, use qdatastream to write qiodevice

Void login: on_loginbutton () {usrname = UI-> usrnamelineedit-> text (). trimmed (); Password = UI-> passwordlineedit-> text (). trimmed (); qregexp rx ("^ [1-9] {} [0-9] {} {1} quot;); Rx. setpatternsyntax (qregexp: Regexp); If (! Rx. exactmatch (usrname) {qmessagebox: Warning (null, TR ("prompt"), TR ("Enter QQ number. ");} else {tcpsocket-> abort (); tcpsocket-> connecttohost (qhostaddress (IP), (quint16) port. touint (); qstring msgtype = "msg_user_login"; qbytearray block; qdatastream out (& Block, qiodevice: writeonly); out. setversion (qdatastream: qt_4_6); out <(quint16) 0 <msgtype <usrname <password; out. device ()-> seek (0); out <(quint16) (Block. size ()-sizeof (quint16); tcpsocket-> write (Block );}}

 

Logon feedback

Void login: on_read () {qbytearray block = tcpsocket-> readall (); qdatastream in (& Block, qiodevice: readonly); // qdatastream in (tcpsocket ); quint16 implements ramsize; qstring msgtype; In> extends ramsize> msgtype; If ("msg_id_notexist" = msgtype) {qmessagebox: Warning (null, TR ("prompt "), TR ("this number does not exist. Please register first. "); UI-> usrnamelineedit-> clear (); UI-> passwordlineedit-> clear ();} else if (" msg_pwd_error "= msgtype) {qmessagebox :: information (null, TR ("prompt"), TR ("Incorrect password. "); UI-> usrnamelineedit-> clear ();} else if (" msg_login_already "= msgtype) {qmessagebox: Information (null, TR (" prompt "), TR ("Please do not log on again. "); UI-> usrnamelineedit-> clear (); UI-> passwordlineedit-> clear ();} else if (" msg_login_success "= msgtype) {qqpanel = new Panel (usrname, IP, Port); qqpanel-> setwindowtitle (TR ("qqcopy"); qqpanel-> setwindowflags (QT: framelesswindowhint ); qqpanel-> setattribute (QT: wa_translucentbackground); qqpanel-> show (); this-> close ();}

Listener

 

First, TCP Server

void TcpSockServer::incomingConnection(int socketDescriptor){    TcpConThread *thread = new TcpConThread(socketDescriptor, this);    connect(thread, SIGNAL(finished()), thread, SLOT(deleteLater()));    thread->start();}

Window Construction

Daemon: daemon (qwidget * parent): qmainwindow (parent), UI (new UI: Daemon) {UI-> setupui (this ); this-> setwindowtitle ("QQ"); UI-> startlistenbutton-> settext ("Start listening"); UI-> iplineedit-> setenabled (true ); UI-> portlineedit-> setenabled (true); IP. clear (); Port. clear (); DB = new sqlitedb; tableviewrefresh ();}

Refresh of data information

Void daemon: tableviewrefresh () {DB-> connectdb (); this-> mymodel = new mysqlquerymodel; this-> mymodel-> setquery (qobject: TR ("select ID, name, logstat from user order by logstat DESC "); mymodel-> setheaderdata (0, QT: horizontal, TR (" QQ "); mymodel-> setheaderdata (1, qt: horizontal, TR ("nickname"); mymodel-> setheaderdata (2, QT: horizontal, TR ("status ")); UI-> tableview-> setmodel (mymodel); UI-> tableview-> setcolumnwidth (0, 71); UI-> tableview-> setcolumnwidth (1, 71 ); UI-> tableview-> setcolumnwidth (2, 71); UI-> tableview-> show (); DB-> closedb ();}

System broadcast and chat UDP

void Daemon::on_send(){    QByteArray sysMsg;    QDataStream tosend(&sysMsg,QIODevice::WriteOnly);    tosend.setVersion(QDataStream::Qt_4_6);    QString mytype="MSG_SERVER_INFO";    tosend<<(quint16)0<<mytype<<ui->servTextEdit->toPlainText();    tosend.device()->seek(0);    tosend<<(quint16)(sysMsg.size()-sizeof(quint16));    if(!udpSocket->writeDatagram(sysMsg.data(),sysMsg.size(),QHostAddress("192.168.1.255"),6666))    QMessageBox::warning(NULL,"message broadcast","error");    ui->servTextEdit->clear();}

 

 

 

Author: yiyaaixuexi published on 1:45:27 Original article link Read: 13191 comment: 194 view comment