Index: sources/cloudsync/CloudSyncController.h
===================================================================
diff -u -r3f60b9a1c0b3a43ec1c5c72955dce0d80354e35c -r1c23a7f4c576dd70c2bfb94a85af470b7d641f1e
--- sources/cloudsync/CloudSyncController.h	(.../CloudSyncController.h)	(revision 3f60b9a1c0b3a43ec1c5c72955dce0d80354e35c)
+++ sources/cloudsync/CloudSyncController.h	(.../CloudSyncController.h)	(revision 1c23a7f4c576dd70c2bfb94a85af470b7d641f1e)
@@ -93,11 +93,13 @@
         eError_LogFolder        ,
         eError_LogFileInp       ,
 
-        eError_CredentialMake   ,
-        eError_CredentialFile   ,
-        eError_CredentialCopy   ,
-        eError_CredentialRemove ,
+        eError_CredentialMake   , // the UI vault folder for cloudsync credentials can't be created.
+        eError_CredentialFile   , // the credential files sent to UI can't be find or read or doesn't exist..
+        eError_CredentialCopy   , // the credential files sent to UI can't be copied to UI vault.
+        eError_CredentialRemove , // the credential files sent to UI can't be removed.
+        eError_CredentialEmpty  , // the UI folder doesn't have credential files.
 
+
         eError_OutFileEmpty     , // Out file has changed from CS2UI but the content is empty.
     };
 
@@ -166,20 +168,24 @@
 
 protected:
     void timerEvent(QTimerEvent *event) override;
-
+    bool event(QEvent* vEvent) override;
 public slots:
     bool init();
     bool init(QThread &vThread);
 
 private slots:
     void quit();
 
-    void onWatchFileChange  (const QString &vFile);
-    void onActionReceive    (GuiActionType vAction, const QVariantList &vData);
-    void onTreatmentLogSave (const QString &vPatientID ,
-                             const QString &vDeviceID  ,
-                             const QString &vFileName  );
+    void  onWatchFileChange (const QString &vFile);
+    void  onActionReceive   (GuiActionType vAction, const QVariantList &vData);
+    void  onTreatmentLogSave(const QString &vPatientID ,
+                            const QString &vDeviceID  ,
+                            const QString &vFileName  );
+    void  onInitComplete    ();
 
+signals:
+    void didInitComplete    ();
+
 private:
     void initConnections();