Index: sources/gui/GuiGlobals.cpp
===================================================================
diff -u -rd862dfcd402206e33b314c458e41c13b684a4565 -rf20fa155dca799c332189f8d3932e35b5c4ef84a
--- sources/gui/GuiGlobals.cpp	(.../GuiGlobals.cpp)	(revision d862dfcd402206e33b314c458e41c13b684a4565)
+++ sources/gui/GuiGlobals.cpp	(.../GuiGlobals.cpp)	(revision f20fa155dca799c332189f8d3932e35b5c4ef84a)
@@ -206,7 +206,53 @@
         _viewer->engine()->addImportPath("qrc:/plugins");
         //DEBUG: qDebug() << _viewer->engine()->importPathList();
         _viewer->setSource(QStringLiteral("qrc:/main.qml"));
+
+        // if reload QML build arguement is set then set reloadable main.qml source
+        if ( gReloadQML) {
+            const QUrl mainQML(QUrl::fromLocalFile(QStringLiteral("%1/qml/main.qml").arg(QML_PATH)));
+            _viewer->setReloadSource(mainQML);
+        }
+
         LOG_DEBUG("MainView started");
         return true;
     }
+
+    /*!
+     * \brief setReloadSource
+     * \param   vUrl - local top level qml file to set as reloadble source
+     * \details Source code url used to reload the qml during developing without requiring an application restart
+     */
+    void MainView::setReloadSource(QUrl vUrl)
+    {
+        _reloadSource = vUrl;
+    }
+
+    /*!
+     * \brief reload
+     * \details Used to reload the qml during developing without requiring an application restart
+     */
+    void MainView::reload()
+    {
+        engine()->clearComponentCache();
+        setSource(_reloadSource.isEmpty() ? source() : _reloadSource);
+        qDebug() << "QML reloaded.";
+    }
+
+    /*!
+     * \brief keyPressEvent
+     * \param   vEvent - QKeyEvent user key input
+     * \details event handler for input key events
+     */
+    void MainView::keyPressEvent(QKeyEvent *vEvent)
+    {
+        // Enable reloading of the QML files for quicker development
+        if ( gReloadQML ) {
+            if (vEvent->key() == Qt::Key_F5)
+            {
+                QMetaObject::invokeMethod(this, &MainView::reload, Qt::QueuedConnection);
+            }
+        }
+
+        QQuickView::keyPressEvent(vEvent);
+    }
 }