How to connect two Tabs in Applicatin?

[mandarinka]

Hello.
I have an Application with two Tabs:
- Tab1 (described in tab1.h file) has a QLineEdit widget.
- Tab2 (described in tab2.h file) has a QTableWidget widget.
They are added to Application in tabDialog.h file like this:

tabWidget->addTab(Tab1,"Tab1");
    tabWidget->addTab(Tab2,"Tab2");
    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(tabWidget);
    setLayout(layout);

tabWidget->addTab(Tab1,"Tab1");
    tabWidget->addTab(Tab2,"Tab2");
    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(tabWidget);
    setLayout(layout);

To copy to clipboard, switch view to plain text mode 

When user run my Application, text in QTableWidgetItem (in Tab2 Table) have to be changed when user press "Enter" in QLineEdit widget (in Tab1).

Could you please give me some idea how and where to connect SIGNAL(returnPressed()) from Tab1 with public slot from Tab2?

[stampede]

They are added to Application in tabDialog.h (...)

Why are you creating your objects in a header ? And where exactly is the code called ? Is it inline constructor ?
About connection : connect tabs once after adding them to widget:

tabWidget->addTab(Tab1,"Tab1");
tabWidget->addTab(Tab2,"Tab2");
connect( Tab1, SIGNAL(returnPressed()), Tab2, SLOT(publicSlotFromTab2()) );
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(tabWidget);
setLayout(layout);

tabWidget->addTab(Tab1,"Tab1");
tabWidget->addTab(Tab2,"Tab2");
connect( Tab1, SIGNAL(returnPressed()), Tab2, SLOT(publicSlotFromTab2()) );
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(tabWidget);
setLayout(layout);

To copy to clipboard, switch view to plain text mode 

[mandarinka]

Why are you creating your objects in a header ?

I create them in .cpp files. I have .h and .cpp files, as it have to be.

And where exactly is the code called ?

In main.cpp like this:

int main(int argc,char *argv[])
{
    QApplication app(argc,argv);
    tabDialog tabdialog;
    return tabdialog.exec();
}

int main(int argc,char *argv[])
{
    QApplication app(argc,argv);
    tabDialog tabdialog;
    return tabdialog.exec();
}

To copy to clipboard, switch view to plain text mode 

connect( Tab1, SIGNAL(returnPressed()), Tab2, SLOT(publicSlotFromTab2()) );

This does not work. Tab2 in my Application does not change it's Table when user press "Enter" in QLineEdit in Tab1. Maybe I have to push Tab2 to "redraw" itself somehow? But how?

[stampede]

This does not work

You mean that signal is not delivered to slot ? Try to see if connection call is ok:

bool status = connect(Tab1, ... );
qDebug() << "connection status: " << status;

bool status = connect(Tab1, ... );
qDebug() << "connection status: " << status;

To copy to clipboard, switch view to plain text mode 

Add some qDebugs in the slot itself as well and see if you can see them after pressing "return".