I'm new to QWebChannel, so I apologize in advance if this is a stupid question. But I am having some difficulty figuring out how to access Qt objects/methods, elsewhere in my JavaScript app, using QWebChannel. The comments in the JS snippet below should clarify what I mean. I can access everything fine in the callback when I instantiate QWebChannel, but it seems like channel.objects loses its context outside of that...even if I try to make it global.

JS snippet:

Qt Code: 
  1. new QWebChannel(qt.webChannelTransport, function (channel) { 
  2.     channel.objects.bridge.sendMessage("hello");  // this works
  3.     window.bridge = channel.objects.bridge; // try to make global
  4. });
  5.  
  6. function foo (msg) {
  7.     bridge.sendMessage("hello from foo");  // this doesn't work
  8.     window.bridge.sendMessage("hello from foo");  // this doesn't work
  9.     // how might I access sendMessage here?
  10. }
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On the Python side:

Qt Code: 
  1. from PyQt5.QtWebEngineWidgets import QWebEnginePage
  2. from PyQt5.QtCore import pyqtSlot, pyqtSignal
  3.  
  4.  
  5. class MyWebPage(QWebEnginePage):
  6.  
  7.     Bridge = pyqtSignal(list)
  8.  
  9.     def __init__(self):
  10.         super(MyWebPage, self).__init__()
  11.  
  12.     def javaScriptConsoleMessage(self, level, message, lineNumber, sourceId):
  13.         toWrite = "JsConsole(%s:%d):\n %s" % (sourceId, lineNumber, message)
  14.         self._log.info(toWrite)
  15.         print toWrite
  16.  
  17.     @pyqtSlot(str)
  18.     def sendMessage(self, msg):
  19.         print msg
  20.         self.Bridge.emit(msg)  # over here, a signal is emitted with the message for elsewhere in the code
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Any help would be greatly appreciated. I am using the qtwebchannel.js file included in Qt5.6 and just loading it into my HTML document.