- Qt 5.5
- Qt Widgets
- Extension Example
- finddialog.cpp Example File
- Qt 5.5.1 Reference Documentation

# finddialog.cpp Example File

dialogs/extension/finddialog.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    #include <QtWidgets>

    #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);

        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"));

        buttonBox = new QDialogButtonBox(Qt::Vertical);
        buttonBox->addButton(findButton, QDialogButtonBox::ActionRole);
        buttonBox->addButton(moreButton, QDialogButtonBox::ActionRole);

        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);

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

        setLayout(mainLayout);

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