Qt-布局管理器

#include "stackdlg.h"
#include <QHBoxLayout>
StackDlg::StackDlg(QWidget *parent)
    : QDialog(parent)
{
    setWindowTitle(tr("StackedWidget"));
    list =new QListWidget(this);
    list->insertItem(0,tr("Window1"));
    list->insertItem(1,tr("Window2"));
    list->insertItem(2,tr("Window3"));

    label1 =new QLabel(tr("WindowTest1"));
    label2 =new QLabel(tr("WindowTest2"));
    label3 =new QLabel(tr("WindowTest3"));

    stack =new QStackedWidget(this);
    stack->addWidget(label1);
    stack->addWidget(label2);
    stack->addWidget(label3);

   QHBoxLayout *mainLayout =new QHBoxLayout(this);
    mainLayout->setMargin(5);
    mainLayout->setSpacing(5);
    mainLayout->addWidget(list);
    mainLayout->addWidget(stack,0,Qt::AlignHCenter);
    mainLayout->setStretchFactor(list,1);
    mainLayout->setStretchFactor(stack,3);
    connect(list,SIGNAL(currentRowChanged(int)),stack,SLOT(setCurrentIndex(int)));

}

StackDlg::~StackDlg()
{

}