Event processing and orders

[qtacc32]

Hello,

I want to have a connection timeout for QTcpSocket and have a few questions (also see pseudocode below):

Will QObject::killTimer() drop any pending events of the passed timer?
Meaning, is it guaranteed that no timerEvent() will occur after killTimer() was called?

And is it possible that the QTcpSocket::connected() signal event is queued but before it is processed, other events (like timer events) can occur?

Could the following happen?:
The connection attempt succeeds, Qt internally queues the QTcpSocket::connected() signal event but by chance, the timerEvent() is called before SltConnected().
So, OnConnected(false) is called but then, the qeueued connected-event is processed and OnConnected(true); is called, so I have two OnConnected() calls which I would like to avoid.

Of course I could use a Qt::DirectConnection, but then again my question is if killTimer() inside Client::SltConnected() guarantees that Client::timerEvent() will not be called anymore (if it was possibly already queued).

// Pseudocode

connect(&socket, &QTcpSocket::connected, this, &Client::SltConnected, Qt::QueuedConnection);

Client::Connect()
{
    startTimer(1000);
    socket.connectToHost();
}

Client::SltConnected()
{
    killTimer();
    OnConnected(true);
}

Client::timerEvent()
{
    killTimer();
    socket.abort();
    OnConnected(false);
}

Thank you very much!

[qtacc32]

Pushing again.