calling function with functions

s002wjh

if I have a class with function like this

void test::listen()
{
QTcpServer::listen(QHostAddress::Any,1234);
}

how can I access QTcpServer::listen() from another file? something like this?

test *tt = new test();

tt->lisen()::QTcpServer::listen() ??

SGaist

Hi,

Are you aware that the listen function of QTcpServer is not a static method ?

ODБOï

yes

JonB

@s002wjh
You asked this and @jsulm answered you at https://forum.qt.io/topic/110393/check-port-in-use/8

@jsulm said in check port in use:

@s002wjh said in check port in use:

can I do this without creating new tcpserver etc?

No, because listen() is not static

You need to understand static and that QTcpServer::listen() is not static and really is going to require you to create an instance of QTcpServer in order to call it :)

mrjj

Hi
You are a bit off.
You need to have an instance and it has to be a member.

class test {
...
QTcpServer server;//instance
}

void test::listen()
{
server.listen(QHostAddress::Any,1234); // use the instance, listen cannot be used as static method
}

test *tt = new test();
tt->listen();

jsulm

@s002wjh said in calling function with functions:

how can I access QTcpServer::listen() from another file?

I really don't get what you want to do.
To call QTcpServer::listen() in another file you do it in exact same way you do it in test (but create an QTcpServer instance as listen() is not static as I already told you). You really should read a book about C++.