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Showing content from https://developers.arcgis.com/qt/cpp/api-reference/esri-arcgisruntime-bookmarklistmodel.html below:

BookmarkListModel Class | ArcGIS Maps SDK for Qt

Modifying this model (adding, removing, moving) will update the bookmarks available in the Map.

The model returns data for the following roles:

Example:

A common workflow would be to show the bookmark names in a QML UI, and zoom to the different bookmarks as each is selected. To do this, you could do following:

Register the BookmarkListModel type as a QML type:

qmlRegisterUncreatableType<BookmarkListModel>("Esri.Samples", 1, 0,
                                              "BookmarkListModel",
                                              "BookmarkListModel is an uncreatable type");

Expose the BookmarkListModel as a Q_PROPERTY:

Q_PROPERTY(QAbstractListModel* bookmarks READ bookmarks NOTIFY bookmarksChanged)

Add some Bookmarks to the list model:

// Get the bookmark list
BookmarkListModel* bookmarks = dynamic_cast<BookmarkListModel*>(m_bookmarks);
if (!bookmarks)
  return;

// Create the bookmark from the name and viewpoint
Bookmark* bookmark = new Bookmark(name, viewpoint, this);

// Add it to the map's bookmark list
bookmarks->append(bookmark);

// emit that model has changed
emit bookmarksChanged();

Use the model in a QML view:

ComboBox {
    id: bookmarkComboBox
    anchors {
        left: parent.left
        top: parent.top
        margins: 15
    }
    property int bestWidth: implicitWidth
    width: bestWidth + leftPadding + rightPadding + (indicator ? indicator.width : 10)
    // Set the model to the BookmarkListModel
    model: manageBookmarksSample.bookmarks

    onModelChanged: {
        const model = bookmarkComboBox.model;
        if (model)
        {
            let w = bestWidth;
            for (let i = 0; i < model.rowCount(); ++i) {
                metrics.text = manageBookmarksSample.bookmarkNameForIndex(i);
                w = Math.max(w, metrics.width);
            }
            bestWidth = w;
        }
    }

    onCurrentTextChanged: {
        // Call C++ invokable function to to go to the bookmark
        manageBookmarksSample.goToBookmark(bookmarkComboBox.currentIndex);
    }

    // Add a background to the ComboBox
    Rectangle {
        anchors.fill: parent
        radius: 10
        // Make the rectangle visible if a dropdown indicator exists
        // An indicator only exists if a theme is set
        visible: parent.indicator
        border.width: 1
    }

    TextMetrics {
        id: metrics
        font: bookmarkComboBox.font
    }
}

Relevant samples:

• Manage bookmarks: Access and create bookmarks on a map.

Destructor.

Appends a bookmark to the bookmark list model.

Returns the bookmark at the specified index.

Removes all bookmarks from the list model.

List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.

Returns true if the list model contains the specified bookmark.

Reimplements: QAbstractItemModel::data(const QModelIndex &index, int role) const.

Returns the data stored under the given role for the bookmark referred to by the index.

• index. The index in the model for which to return data.
• role. The role for which to return data.

Signal emitted when an error occurs.

• error - Details about the error.

Returns the first bookmark in the list model.

Returns the index of the bookmark specified.

Inserts a bookmark at a specified index in the list model.

This method will append to the list model if the index is greater than the current size of the list.

Returns true if the list model contains no bookmarks.

Signal emitted when an item is added from the list model.

index is the index of the removed bookmark.

This function was introduced in Esri::ArcGISRuntime 100.15.

Signal emitted when an item is removed from the list model.

index is the index of the removed item.

This function was introduced in Esri::ArcGISRuntime 100.15.

Returns the last bookmark in the list model.

Moves one bookmark from an index in the list model to a different index.

Removes a bookmark at the specified index.

List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.

Removes the specified bookmark from the list model.

List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.

Returns the number of bookmarks contained in the list model.

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