My dedicated QQ functions (1)

 

? Start

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.

 

 

 

? Logon 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] {1, 2} [0-9] {4, 7} {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 dataGramSize;

QString msgType;

In> dataGramSize> 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 ();

}

 

? Server listening

 

 

 

 

 

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 ();

}