how to get the pointer to parent widget/object?

[rambo83]

Hello,

I would like to call a member function of my mainFrame class from my other Plot class. To do so, I need a pointer to mainFrame class within Plot class. Is there some call like : getParent() or something like this?

In constructor of my Plot class, I already pass the pointer of mainFrame class, so how can I get it then?

Plot::Plot(QWidget *parent):
    QwtPlot(parent)
{

Plot::Plot(QWidget *parent):
    QwtPlot(parent)
{

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Thank you for help.

Vitali