我需要使用javascript在浏览器中将关键事件触发到SWF

Question

So, I've got an idea flowing and I need to fire keyboard events to an embedded swf on a webpage (in Chrome).

And I'm dealing with some limitations:

• The input events have to come from javascript
• The events need to be fired to a swf
• I do not have access to the source of the swf

How I get this done, doesn't really matter. It's more of a personal project, so it can have as many loopholes as I wish.

I've investigated firing directly from javascript, but I concluded that this is simply not possible. Does anyone else have any ideas? Could I for example use the Win32 API somehow?

Answer 1

I'm assuming the SWF is your own, in which case you can use the ExternalInterface.call(); method to execute JS directly in the host page, and you can use the ExternalInterface.addCallback() function to register AS functions as callable on the SWF with JS.

docs

Answer 2

If you don't have access to swf's source, it's impossible, as the only way to do this is to register callbacks in flash and call them in JS. Every callback, of course, must use dispatchEvent method to trigger the event you want (or call event-listening function directly).

The only way to solve you problem is to decompile .swf (using Sothink SWF Decompiler, for example). If it's code is not obfuscated, the output code will be enought clear to read and refactor it. Decompile, add callbacks (use ExternalInterface.addCallback()) and compile it a new time.