@HONZA,

Thanks for kindly guiding me.

I am trying to use ParentCtrl, while I am facing problem.

I am attaching required files. The initial screen is OK. When I press "Configure", I want "CardLayout1" is to be shown which is not coming.
By the by, please ignore many commented lines as I am learner.

Please guide me.

void Testing::doConfig() {
	doPlot.Remove();
	Add(doCard);
}

void Testing::doGeom() {
	doCard.Remove();
	Add(doPlot);
}