Signals and Slot Problem

[houmingc]

in socketudp.cpp
ipDataReceived(datagram) is emitted

In main.cpp
socketudp UnderUDP;
UnderUDP object created.
If i create object in mainwindow.cpp, UDP data cannot received (TCP no problem)
(strange problem, i tried debugging many times and this is the symptom.

in mainwindow.cpp
connect(&UnderUDP,SIGNAL(ipDataReceived(QByteArray)),this,SLOT(onPortDataReceived(QByteArray)));

doing debug, i found my SLOT is never call. Why is this so?
I did experiment 2.
I move slot and QObject::connect to main.cpp but can't declare slot in main.cpp. Pls Help ..
I am out of idea.

[SGaist]

Hi,

Without any code it's pretty much Crystal Ball (™).

IRCC, debugging, so can you share it ?

[houmingc]

I found that i can make connection for UDP to my system not in Mainwindow but in main (before mainwindow object is created), but my problem is main do not have header file ( there is no main.h only main.cpp).

Thus i can't add a SLOT in main.h.

[SGaist]

Depends, you can use C++11 lambda as slots