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# finddialog.cpp Example File
dialogs/extension/finddialog.cpp

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        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be distributed and/or modified under the terms of the
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        #include <QtGui>

        #include "finddialog.h"

        FindDialog::FindDialog(QWidget *parent)
            : QDialog(parent)
        {
            label = new QLabel(tr("Find &what:"));
            lineEdit = new QLineEdit;
            label->setBuddy(lineEdit);

            caseCheckBox = new QCheckBox(tr("Match &case"));
            fromStartCheckBox = new QCheckBox(tr("Search from &start"));
            fromStartCheckBox->setChecked(true);

            findButton = new QPushButton(tr("&Find"));
            findButton->setDefault(true);

            closeButton = new QPushButton(tr("Close"));

            moreButton = new QPushButton(tr("&More"));
            moreButton->setCheckable(true);
            moreButton->setAutoDefault(false);

            extension = new QWidget;

            wholeWordsCheckBox = new QCheckBox(tr("&Whole words"));
            backwardCheckBox = new QCheckBox(tr("Search &backward"));
            searchSelectionCheckBox = new QCheckBox(tr("Search se&lection"));

            connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
            connect(moreButton, SIGNAL(toggled(bool)), extension, SLOT(setVisible(bool)));

            QVBoxLayout *extensionLayout = new QVBoxLayout;
            extensionLayout->setMargin(0);
            extensionLayout->addWidget(wholeWordsCheckBox);
            extensionLayout->addWidget(backwardCheckBox);
            extensionLayout->addWidget(searchSelectionCheckBox);
            extension->setLayout(extensionLayout);

            QHBoxLayout *topLeftLayout = new QHBoxLayout;
            topLeftLayout->addWidget(label);
            topLeftLayout->addWidget(lineEdit);

            QVBoxLayout *leftLayout = new QVBoxLayout;
            leftLayout->addLayout(topLeftLayout);
            leftLayout->addWidget(caseCheckBox);
            leftLayout->addWidget(fromStartCheckBox);
            leftLayout->addStretch(1);

            QVBoxLayout *rightLayout = new QVBoxLayout;
            rightLayout->addWidget(findButton);
            rightLayout->addWidget(closeButton);
            rightLayout->addWidget(moreButton);
            rightLayout->addStretch(1);

            QGridLayout *mainLayout = new QGridLayout;
            mainLayout->setSizeConstraint(QLayout::SetFixedSize);
            mainLayout->addLayout(leftLayout, 0, 0);
            mainLayout->addLayout(rightLayout, 0, 1);
            mainLayout->addWidget(extension, 1, 0, 1, 2);
            setLayout(mainLayout);

            setWindowTitle(tr("Extension"));
            extension->hide();
        }