source: trunk/examples/dialogs/extension/finddialog.cpp

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#include <QtGui>

#include "finddialog.h"

//! [0]
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);

//! [1]
    findButton = new QPushButton(tr("&Find"));
    findButton->setDefault(true);

    moreButton = new QPushButton(tr("&More"));
    moreButton->setCheckable(true);
//! [0]
    moreButton->setAutoDefault(false);

    buttonBox = new QDialogButtonBox(Qt::Vertical);
    buttonBox->addButton(findButton, QDialogButtonBox::ActionRole);
    buttonBox->addButton(moreButton, QDialogButtonBox::ActionRole);
//! [1]

//! [2]
    extension = new QWidget;

    wholeWordsCheckBox = new QCheckBox(tr("&Whole words"));
    backwardCheckBox = new QCheckBox(tr("Search &backward"));
    searchSelectionCheckBox = new QCheckBox(tr("Search se&lection"));
//! [2]

//! [3]
    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);
//! [3]

//! [4]
    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);

    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);
    setLayout(mainLayout);

    setWindowTitle(tr("Extension"));
//! [4] //! [5]
    extension->hide();
}
//! [5]