This function gets called whenever the chat server has sent us some text: Put the focus back into the input box so they can type again: Clear out the input box so they can type something else: Socket->write(QString(message + ' ').toUtf8()) Only send the text to the chat server if it's not empty: QString message = sayLineEdit->text().trimmed() What did they want to say (minus white space around the string): they type text to send to the chat room): This gets called when the user clicks the sayButton (next to where Socket->connectToHost(serverLineEdit->text(), 4200) to the error() signal from this socket. we won't get any error message because we didn't connect() get a connected() function call (below). This returns immediately and then works on connecting Start connecting to the chat server (on port 4200). Void MainWindow::on_loginButton_clicked() Qt recognizes the name of this function and knows to set We didn't have to use connect() to set this up because This gets called when the loginButton gets clicked: connecting to the server (respectively):Ĭonnect(socket, SIGNAL(readyRead()), this, SLOT(readyRead())) Ĭonnect(socket, SIGNAL(connected()), this, SLOT(connected())) functions when the socket has text ready to be read, and is done This is how we tell Qt to call our readyRead() and connected() yet until the user clicks the loginButton: Instantiate our socket (but don't actually connect to anything

StackedWidget->setCurrentWidget(loginPage) Make sure that we are showing the login page when we startup: on the MainWindow that you setup in Designer. This creates and lays out all the widgets When using Designer, you should always call setupUi(this) MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) This is our MainWindow constructor (you C++ n00b) We'll need some regular expression magic in this code: I have a simple tcp client/server chat application that looks like this:Īnd here is my client source code: #include 'MainWindow.h'

Multi chat client with skype