Newbie signal-slot problems in a tcp server-client app

[neoclaw]

First I would like to say; I'm new to Qt, so this may be a simple question.

I'm trying to make a simple tcp server/client application, where the client can send a string to the server. My problem is that I want a list of connected clients, and if a client disconnect it should be remove from the list.

Any ideas on how to do that?

I tried the following:
The function to remove the client from the list

void Server::removeClient(QString address)
{
    for(int i = 0; i < clientList.size(); i++)
    {
        if(strcmp(clientList.at(i).toAscii(), address.toAscii()) == 0)
        {
            clientList.removeAt(i);
        }
    }
}

void Server::removeClient(QString address)
{
    for(int i = 0; i < clientList.size(); i++)
    {
        if(strcmp(clientList.at(i).toAscii(), address.toAscii()) == 0)
        {
            clientList.removeAt(i);
        }
    }
}

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The signal-slot thing

connect(client, SIGNAL(disconnected()),
          this, SLOT(removeClient(const QString &)));

connect(client, SIGNAL(disconnected()),
          this, SLOT(removeClient(const QString &)));

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I don't know if I did it right since I'm new to the whole Qt thing. But I get this error:
Object::connect: No such slot Server::removeClient(QString &)

[Lykurg]

Read about signals and slots in the documentation. You need to declare your function as a slot. Use the Q_OBJECT makro. (And I guess in your case the arguments of signal and slot should match!)

[squidge]

Since you also have a list of clients, you might find QSignalMapper usefull too.