How to connect two Tabs in Applicatin?

[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();
}

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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?