[Qt-interest] Stacked Abstracted Widget: how to change the page?

[Usman Ajmal]

i know there is a slot of setCurrentIndex(int index) for changing the index
of current page but i am getting error while using it.

I write this in my ui_MainWindow.h

  QObject::connect(pushButton_next,
SIGNAL(clicked()),stackedWidget,SLOT(setCurrentIndex(1)));

pushButton_next is a push Button, upon which when somebody click the page
with index = 1 should appear.

Object::connect: No such slot QStackedWidget::setCurrentIndex(1)
Object::connect:  (sender name:   'pushButton_next')
Object::connect:  (receiver name: 'stackedWidget')

How should i use it?
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