";
+}
+
+/////////////////////////////////////////////////
+QString AboutDialogHandler::getVersionInformation()
+{
+ return QString::fromStdString(this->aboutText);
+}
+
+/////////////////////////////////////////////////
+void AboutDialogHandler::openURL(QString _url)
+{
+ QDesktopServices::openUrl(QUrl(_url));
+}
diff --git a/src/gui/AboutDialogHandler.hh b/src/gui/AboutDialogHandler.hh
new file mode 100644
index 0000000000..b5f71b543d
--- /dev/null
+++ b/src/gui/AboutDialogHandler.hh
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2021 Open Source Robotics Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+#ifndef IGNITION_GAZEBO_GUI_ABOUTDIALOGHANDLER_HH_
+#define IGNITION_GAZEBO_GUI_ABOUTDIALOGHANDLER_HH_
+
+#include