diff --git a/examples/CtaTrading/runCtaTrading.py b/examples/CtaTrading/runCtaTrading.py
index b34960d9..7f315e08 100644
--- a/examples/CtaTrading/runCtaTrading.py
+++ b/examples/CtaTrading/runCtaTrading.py
@@ -1,5 +1,9 @@
 # encoding: UTF-8
 
+import sys
+reload(sys)
+sys.setdefaultencoding('utf8')
+
 import multiprocessing
 from time import sleep
 from datetime import datetime, time
diff --git a/vnpy/trader/uiMainWindow.py b/vnpy/trader/uiMainWindow.py
index 9d97f60d..38f52333 100644
--- a/vnpy/trader/uiMainWindow.py
+++ b/vnpy/trader/uiMainWindow.py
@@ -112,6 +112,10 @@ class MainWindow(QtWidgets.QMainWindow):
         appMenu = menubar.addMenu(vtText.APPLICATION)
         
         for appDetail in self.appDetailList:
+            # 如果没有应用界面，则不添加菜单按钮
+            if not appDetail['appWidget']:
+                continue
+            
             function = self.createOpenAppFunction(appDetail)
             action = self.createAction(appDetail['appDisplayName'], function, loadIconPath(appDetail['appIco']))
             appMenu.addAction(action)