StackedLayout : segmentation fault at slot :: nextSlide1()

[houmingc]

Debugging, show segmentation fault at slot nextSlide1()
No problem using comboBox to page QStackedLayout but when i switch to timer, the slot nextSlide show segmentation fault.

'''
Widget::Widget(QWidget *parent) : QWidget(parent)
{

QLabel *firstPageWidget = new QLabel("one");
QLabel *secondPageWidget = new QLabel("two");

QStackedLayout *stackedLayout = new QStackedLayout;
stackedLayout->addWidget(firstPageWidget);
stackedLayout->addWidget(secondPageWidget);

 //    QComboBox *pageComboBox = new QComboBox;
  //    pageComboBox->addItem(tr("Page 1"));
  //    pageComboBox->addItem(tr("Page 2"));

// connect(pageComboBox, SIGNAL(activated(int)),
// stackedLayout, SLOT(setCurrentIndex(int)));

   timershift = new QTimer(this);
   connect(timershift,SIGNAL(timeout()),this, SLOT(nextSlide1()));
   timershift->start(1200); 

   QVBoxLayout *mainLayout = new QVBoxLayout;
   mainLayout->addLayout(stackedLayout);
   setLayout(mainLayout);

}
void Widget::nextSlide1()
{
stackedLayout->setCurrentIndex(stackedLayout->currentIndex()+1);

}

[alex_malyu]

@houmingc said:

try to replace:
stackedLayout->setCurrentIndex(stackedLayout->currentIndex()+1);

with
if( stackedLayout->currentIndex() < stackedLayout->count() - 1)
stackedLayout->setCurrentIndex(stackedLayout->currentIndex()+1);
else
stackedLayout->setCurrentIndex(0);