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I upgraded my IE from version 10 to 11 and found that my ActiveX custom event couldn't work.
The reason is that IE11 does not support attachEvent any more, and seems I have to use addEventListener. For example previously I used
obj.attachEvent("onSelected", method1);
and now, it is
obj.addEventListener("onSelected",method1,false);
After changing the code, the method1 cannot be triggered. I have no idea how to bind custom event, which is implemented in ActiveX plugin, to JS method and make it work on IE11?