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# dialog.cpp Example File
layouts/basiclayouts/dialog.cpp

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        #include <QtGui>

        #include "dialog.h"

        Dialog::Dialog()
        {
            createMenu();
            createHorizontalGroupBox();
            createGridGroupBox();

            bigEditor = new QTextEdit;
            bigEditor->setPlainText(tr("This widget takes up all the remaining space "
                                       "in the top-level layout."));

            okButton = new QPushButton(tr("OK"));
            cancelButton = new QPushButton(tr("Cancel"));
            okButton->setDefault(true);

            connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));
            connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));

            QHBoxLayout *buttonLayout = new QHBoxLayout;
            buttonLayout->addStretch(1);
            buttonLayout->addWidget(okButton);
            buttonLayout->addWidget(cancelButton);

            QVBoxLayout *mainLayout = new QVBoxLayout;
            mainLayout->setMenuBar(menuBar);
            mainLayout->addWidget(horizontalGroupBox);
            mainLayout->addWidget(gridGroupBox);
            mainLayout->addWidget(bigEditor);
            mainLayout->addLayout(buttonLayout);
            setLayout(mainLayout);

            setWindowTitle(tr("Basic Layouts"));
        }

        void Dialog::createMenu()
        {
            menuBar = new QMenuBar;

            fileMenu = new QMenu(tr("&File"), this);
            exitAction = fileMenu->addAction(tr("E&xit"));
            menuBar->addMenu(fileMenu);

            connect(exitAction, SIGNAL(triggered()), this, SLOT(accept()));
        }

        void Dialog::createHorizontalGroupBox()
        {
            horizontalGroupBox = new QGroupBox(tr("Horizontal layout"));
            QHBoxLayout *layout = new QHBoxLayout;

            for (int i = 0; i < NumButtons; ++i) {
                buttons[i] = new QPushButton(tr("Button %1").arg(i + 1));
                layout->addWidget(buttons[i]);
            }
            horizontalGroupBox->setLayout(layout);
        }

        void Dialog::createGridGroupBox()
        {
            gridGroupBox = new QGroupBox(tr("Grid layout"));
            QGridLayout *layout = new QGridLayout;

            for (int i = 0; i < NumGridRows; ++i) {
                labels[i] = new QLabel(tr("Line %1:").arg(i + 1));
                lineEdits[i] = new QLineEdit;
                layout->addWidget(labels[i], i, 0);
                layout->addWidget(lineEdits[i], i, 1);
            }

            smallEditor = new QTextEdit;
            smallEditor->setPlainText(tr("This widget takes up about two thirds of the "
                                         "grid layout."));
            layout->addWidget(smallEditor, 0, 2, 3, 1);

            layout->setColumnStretch(1, 10);
            layout->setColumnStretch(2, 20);
            gridGroupBox->setLayout(layout);
        }