syntax signal/slots QT - question

Jeronimo

I have some questions about signal and slots. First thing the syntax look like this:

connect(const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)

If i am not wrong:

const QObject *sender-> is the button that start the signal?
const char *signal, -> the signal
const char *method->element receive the signal
Qt::ConnectionType type-> slot

Other question i have, i can call the signal using emit or other way without buttons? thx again!

SGaist

Hi,

A signal should be emitted from within the class that declares it. What do you have in mind ?

Also, you should move to Qt 5's new syntax. It does compile time check rather than run time.

Jeronimo

ok solved this is the button that you press but if for example i want to emit the signal without buttons normally in this i put ui->button

SGaist

If you don't have a sender then you can't emit a signal.

What is exactly your use case ?

Jeronimo

@SGaist i need other sender because my program is only console program, But i dont know other way to activate sender without buttons or using main window.

SGaist

How is exactly your application supposed to work ?

Jeronimo

@SGaist my program will be console so i can't use buttons like with mainwindow. So i dont know other way to activate sender or emit signal.
How is exactly your application supposed to work ?
Activate some sender to activate signal i was trying include in this code something to activate sender without using buttons.
Signal/slot connection:
connect(this, SIGNAL(finished(QNetworkReply*)),this, SLOT(replyFinished(QNetworkReply*)));
I need some sender to activate this signal.
If i am doing one console program i can activate sender???

SGaist

That I understood, my question is: what is your application supposed to do ? i.e How should it be used ? Why do you need that signal ?

Jeronimo

@SGaist i need because i'm doing one little console program to download files of my page. It will be used i put in the code the url of my page and download my the file. And maybe more advance i will try to do one http client.

Jeronimo

@SGaist thx a lot i solved my problem i was trying to update one http client with qt console to download some files of my webpage. At last i asked in other forum and i clear this. So thx again!