修改QApp对象需要用户显式调用createQApp函数后创建

README.md

@@ -64,7 +64,7 @@ sys.setdefaultencoding('utf8')
 # vn.trader模块
 from vnpy.event import EventEngine
 from vnpy.trader.vtEngine import MainEngine
-from vnpy.trader.uiQt import qApp
+from vnpy.trader.uiQt import createQApp
 from vnpy.trader.uiMainWindow import MainWindow
 
 # 加载底层接口
@@ -77,6 +77,9 @@ from vnpy.trader.app import riskManager, ctaStrategy
 #----------------------------------------------------------------------
 def main():
     """主程序入口"""
+    # 创建Qt应用对象
+    qApp = createQApp()
+
     # 创建事件引擎
     ee = EventEngine()
 

examples/VnTrader/run.py

@@ -12,7 +12,7 @@ system = platform.system()
 # vn.trader模块
 from vnpy.event import EventEngine
 from vnpy.trader.vtEngine import MainEngine
-from vnpy.trader.uiQt import qApp
+from vnpy.trader.uiQt import createQApp
 from vnpy.trader.uiMainWindow import MainWindow
 
 # 加载底层接口
@@ -30,6 +30,9 @@ from vnpy.trader.app import (riskManager, ctaStrategy, spreadTrading)
 #----------------------------------------------------------------------
 def main():
     """主程序入口"""
+    # 创建Qt应用对象
+    qApp = createQApp()
+    
     # 创建事件引擎
     ee = EventEngine()
     

vnpy/trader/archive/vtClient.py

@@ -11,7 +11,7 @@ from vnpy.rpc import RpcClient
 
 from vnpy.trader.vtGlobal import globalSetting
 from vnpy.trader.vtEngine import MainEngine
-from vnpy.trader.uiQt import qApp
+from vnpy.trader.uiQt import createQApp
 from vnpy.trader.uiMainWindow import MainWindow
 
 
@@ -148,6 +148,9 @@ class ClientEngine(MainEngine):
 #----------------------------------------------------------------------
 def main():
     """客户端主程序入口"""
+    # 创建Qt对象
+    qApp = createQApp()
+    
     # 创建事件引擎
     eventEngine = EventEngine2()
     eventEngine.start(timer=False)

vnpy/trader/uiQt.py

@@ -7,30 +7,37 @@ from qtpy import QtWidgets, QtGui, QtCore
 from vnpy.trader.vtGlobal import globalSetting
 from vnpy.trader.vtFunction import loadIconPath
 
-# 创建Qt应用对象
-qApp = QtWidgets.QApplication([])
 
-# 设置Qt的皮肤
-if globalSetting['darkStyle']:
-    try:
-        import qdarkstyle
-        qApp.setStyleSheet(qdarkstyle.load_stylesheet(pyside=False))
-    except ImportError:
-        pass
+#----------------------------------------------------------------------
+def createQApp():
+    """创建PyQt应用对象"""
+    # 创建Qt应用对象
+    qApp = QtWidgets.QApplication([])
     
-# 设置Windows底部任务栏图标
-if 'Windows' in platform.uname():
-    import ctypes
-    ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID('vn.trader')  
-
-# 设置Qt字体
-try:
-    family = globalSetting['fontFamily']
-    size = globalSetting['fontSize']
-    BASIC_FONT = QtGui.QFont(family, size)
-except:
-    BASIC_FONT = QtGui.QFont(u'微软雅黑', 12)
-qApp.setFont(BASIC_FONT)
-
-# 设置Qt图标
-qApp.setWindowIcon(QtGui.QIcon(loadIconPath('vnpy.ico')))
+    # 设置Qt的皮肤
+    if globalSetting['darkStyle']:
+        try:
+            import qdarkstyle
+            qApp.setStyleSheet(qdarkstyle.load_stylesheet(pyside=False))
+        except ImportError:
+            pass
+        
+    # 设置Windows底部任务栏图标
+    if 'Windows' in platform.uname():
+        import ctypes
+        ctypes.windll.shell32.SetCurrentProcessExplicitAppUserModelID('vn.trader')  
+    
+    # 设置Qt字体
+    try:
+        family = globalSetting['fontFamily']
+        size = globalSetting['fontSize']
+        BASIC_FONT = QtGui.QFont(family, size)
+    except:
+        BASIC_FONT = QtGui.QFont(u'微软雅黑', 12)
+    qApp.setFont(BASIC_FONT)
+    
+    # 设置Qt图标
+    qApp.setWindowIcon(QtGui.QIcon(loadIconPath('vnpy.ico')))
+    
+    # 返回创建好的QApp对象
+    return qApp