How to connect my QToolButton to setIndexPage on my QStackedWidget in Qt?

I have a QStackedWidget whose first page is set to Wgt1. Wgt1 contains 3 buttons btn1,btn2 and

btn3

. I want to do following

1. When widget starts it should setIndex as zero that is my first page on QStackedWidget.
2. When I press btn1,btn2 and btn3 , I should move to indexPage 1 , 2 and 3 respectively.

I wanted to use signal and slot so tried to connect the clicked() signal of QToolButton to setCurrentIndex(int) slot of QStackedWidget. But It does not work as click() does not send any (int) value required by setCurrentIndex(int). So for this I thought to override the MousePressEvent(MouseEvent *e). I want to do something like to introduce a new signal(int) in my Wgt1 so that it will emit some certain integer value on pressing the buttons on first page.

But to implement this I am not clear about following

1. Which MousePressEvent() I should override? For my Wgt1(which contains the buttons) or for the QToolButtons which is contained by my Wgt1?
2. If I want to override for Wgt1 how I can detect which QToolButton is pressed in the QMousePressEvent?
   1. If I want to override for QToolButton how to write it? Should I create a new class deriving from QToolButton? or can I assign some function pointer or event handler to MousePressEvent()?

If you can answer the above questions it will be helpful otherwise you can suggest any other way also to solve this problem. I don't know if I explained my problem clearly or not. Please r开发者_开发知识库evert back I will try to explain it more.

There are many possible solutions, but I recommend to use QSignalMapper. I think that overriding an event handler is more complex than necessary.

The code would look something like:

QSignalMapper* sm = new QSignalMapper(this);

// connect to `clicked' on all buttons
connect(btn1, SIGNAL(clicked()), sm, SLOT(map()));
connect(btn2, SIGNAL(clicked()), sm, SLOT(map()));
connect(btn3, SIGNAL(clicked()), sm, SLOT(map()));

// setMapping on each button to the QStackedWidget index we'd like to switch to
// note: this affects the value passed via QSignalMapper::mapped(int) signal
sm->setMapping(btn1, 1);
sm->setMapping(btn2, 2);
sm->setMapping(btn3, 3);

// finally, connect the mapper to the stacked widget
connect(sm, SIGNAL(mapped(int)), stackedWidget, SLOT(setCurrentIndex(int)));