Qt5 layout management (2)

1. Stack form qstackedwidget:

(1) initialize the ListBox qlistwidget:

QListWidget *list=new QListWidget (this);

    list->insertItem(0,tr("Window1"));

    list->insertItem(1,tr("Window2"));

    list->insertItem(2,tr("Window3"));

(2) create a stack form qstackedwidget:

 QStackedWidget *stack=new QStackedWidget(this);

    stack->addWidget(label1);

      stack->addWidget(label2);

        stack->addWidget(label3);

(3) Insert the tag control into the stack form:

QLabel *label1=new QLabel(tr("SHOW1"));

     QLabel *label2=new QLabel(tr("SHOW2"));

     QLabel *label3=new QLabel(tr("SHOW3"));

(4) layout the dialog box:

 QHBoxLayout *mainLayout =new QHBoxLayout(this);

        mainLayout->setMargin(6);

        mainLayout->setSpacing(6);

        mainLayout->addWidget(list);

        mainLayout->addWidget(stack,0,Qt::AlignHCenter);

       mainLayout->setStretchFactor(list,1);

         mainLayout->setStretchFactor(stack,1);

(5) connect the qlistwidget signal with the slot function of the stack form:

 connect(list,SIGNAL(currentRowChanged(int)),stack,SLOT(setcurrentIndex(int)));

Qt5 layout management (2)