How to access UI elements from subclass.

[NuMs]

Hello!

Trying to learn QT.

My current project has one GUI and I need to be able to access elements of the UI from subclasses. None of the subclasses have a UI.

How do I pass Ui::MainWindow to subclasses? Basically they need to be able to update labels or text fields.

I've tried to pass it through the constructor like below:

SubClass::SubClass(Ui::MainWindow mw) {
    this->mw = mw;
}

SubClass::SubClass(Ui::MainWindow mw) {
    this->mw = mw;
}

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With it defined in the header file:

class SubClass {
    public:
        SubClass(Ui::MainWindow mw);
        Ui::MainWindow mw;
}

class SubClass {
    public:
        SubClass(Ui::MainWindow mw);
        Ui::MainWindow mw;
}

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Which of course doesn't work. I'm guessing there's a proper way to do this but I haven't been able to find it in any of the tutorials or documentation.

Any help would be appreciated.
Thanks