Index: leahi.pro
===================================================================
diff -u -rd862dfcd402206e33b314c458e41c13b684a4565 -rf20fa155dca799c332189f8d3932e35b5c4ef84a
--- leahi.pro	(.../leahi.pro)	(revision d862dfcd402206e33b314c458e41c13b684a4565)
+++ leahi.pro	(.../leahi.pro)	(revision f20fa155dca799c332189f8d3932e35b5c4ef84a)
@@ -704,7 +704,8 @@
     VER_REVIS="\\\"${buildNumber}\\\""                              \
     VER_REVIS_DEV=\\\"$$system( date "+%m%d%H%M" )\\\"              \
     VER_APPLY=\\\"$$system( touch -m main.cpp )\\\"                 \
-    VER_BRANCH=\\\"$$system( git rev-parse --abbrev-ref HEAD )\\\"
+    VER_BRANCH=\\\"$$system( git rev-parse --abbrev-ref HEAD )\\\"  \
+    QML_PATH=\\\"$$PWD/sources/gui\\\"
 
 # Additional import path used to resolve QML modules in Qt Creator's code model
 QML_IMPORT_PATH =
Index: main.cpp
===================================================================
diff -u -ra5760947d3ed0d2748ba023a1c25e3c6aa0b1de1 -rf20fa155dca799c332189f8d3932e35b5c4ef84a
--- main.cpp	(.../main.cpp)	(revision a5760947d3ed0d2748ba023a1c25e3c6aa0b1de1)
+++ main.cpp	(.../main.cpp)	(revision f20fa155dca799c332189f8d3932e35b5c4ef84a)
@@ -99,6 +99,7 @@
 bool        gConsoleoutFrameInterface   = false ;
 bool        gConsoleoutCanInterface     = false ;
 
+bool        gReloadQML                  = false ;
 bool        gEnableDryDemo              = false ;
 QString     gActiveCANBus               = "can0";
 
@@ -127,6 +128,7 @@
  *   --help-all                           Displays help including Qt specific
  *                                        options.
  *   -v, --version                        Displays version information.
+ *   -r, --reload-qml                     Enable QML reload/refresh with F5 key
  *   -c, --canOut                         Show the Can Frame Output
  *   -m, --msgOut                         Show the Message Output
  *   -l, --logOut                         Show the Logs Output
@@ -181,6 +183,12 @@
     parser.addHelpOption();
     parser.addVersionOption();
 
+    // --- -r : reload
+    QCommandLineOption optionReloadQML(
+                QStringList() << "r" << "reload-qml",
+                QCoreApplication::translate("main", "Enable QML reload/refresh with F5 key"));
+    parser.addOption(optionReloadQML);
+
     // --- -c : canOut
     QCommandLineOption optionConsoleoutCanInterface(
                 QStringList() << "c" << "canOut",
@@ -355,6 +363,7 @@
     gDisableCheckInLog          = parser.isSet(optionDisableCheckInLog          );
     gDisableAcknowLog           = parser.isSet(optionDisableAcknowLog           );
 
+    gReloadQML                  = parser.isSet(optionReloadQML                  );
     gEnableDryDemo              = parser.isSet(optionEnableDryDemo              );
 
     gEnableManufacturing        = parser.isSet(optionEnableManufacturing        );
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);
+    }
 }
Index: sources/gui/GuiGlobals.h
===================================================================
diff -u -rd862dfcd402206e33b314c458e41c13b684a4565 -rf20fa155dca799c332189f8d3932e35b5c4ef84a
--- sources/gui/GuiGlobals.h	(.../GuiGlobals.h)	(revision d862dfcd402206e33b314c458e41c13b684a4565)
+++ sources/gui/GuiGlobals.h	(.../GuiGlobals.h)	(revision f20fa155dca799c332189f8d3932e35b5c4ef84a)
@@ -36,6 +36,17 @@
             emit eventSpy(vEvent);
             return QQuickView::event(vEvent);
         }
+
+        public:
+            void setReloadSource(QUrl vUrl);
+            QUrl    _reloadSource;
+
+        private Q_SLOTS:
+            void reload();
+        
+        private:
+            void keyPressEvent(QKeyEvent *vEvent) override;
+
         signals:
             void eventSpy(QEvent* vEvent);
     };
Index: sources/main.h
===================================================================
diff -u -ra5760947d3ed0d2748ba023a1c25e3c6aa0b1de1 -rf20fa155dca799c332189f8d3932e35b5c4ef84a
--- sources/main.h	(.../main.h)	(revision a5760947d3ed0d2748ba023a1c25e3c6aa0b1de1)
+++ sources/main.h	(.../main.h)	(revision f20fa155dca799c332189f8d3932e35b5c4ef84a)
@@ -98,6 +98,7 @@
 extern bool       gConsoleoutFrameInterface ;
 extern bool       gConsoleoutCanInterface   ;
 
+extern bool       gReloadQML                ;
 extern bool       gEnableDryDemo            ;
 extern QString    gActiveCANBus             ;
 extern bool       gEnableManufacturing      ;