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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++ #include <QComboBox>
++ #include <QDragEnterEvent>
++ #include <QLabel>
++ #include <QMimeData>
++ #include <QTextBrowser>
++ #include <QVBoxLayout>
++ #include <QWidget>
++
++ namespace dropevents {
++ class Window : public QWidget
++ {
++
++ public:
++ explicit Window(QWidget *parent = nullptr);
++
++ protected:
++ void dragEnterEvent(QDragEnterEvent *event) override;
++ void dropEvent(QDropEvent *event) override;
++
++ private:
++ QComboBox *mimeTypeCombo = nullptr;
++ QTextBrowser *textBrowser = nullptr;
++ QString oldText;
++ QStringList oldMimeTypes;
++ };
++
++ //! [0]
++ Window::Window(QWidget *parent)
++ : QWidget(parent)
++ {
++ //! [0]
++ QLabel *textLabel = new QLabel(tr("Data:"), this);
++ textBrowser = new QTextBrowser(this);
++
++ QLabel *mimeTypeLabel = new QLabel(tr("MIME types:"), this);
++ mimeTypeCombo = new QComboBox(this);
++
++ QVBoxLayout *layout = new QVBoxLayout(this);
++ layout->addWidget(textLabel);
++ layout->addWidget(textBrowser);
++ layout->addWidget(mimeTypeLabel);
++ layout->addWidget(mimeTypeCombo);
++
++ //! [1]
++ setAcceptDrops(true);
++ //! [1]
++ setWindowTitle(tr("Drop Events"));
++ //! [2]
++ }
++ //! [2]
++
++ //! [3]
++ void Window::dragEnterEvent(QDragEnterEvent *event)
++ {
++ if (event->mimeData()->hasFormat("text/plain"))
++ event->acceptProposedAction();
++ }
++ //! [3]
++
++ //! [4]
++ void Window::dropEvent(QDropEvent *event)
++ {
++ textBrowser->setPlainText(event->mimeData()->text());
++ mimeTypeCombo->clear();
++ mimeTypeCombo->addItems(event->mimeData()->formats());
++
++ event->acceptProposedAction();
++ }
++ //! [4]
++
++ } // dropevents