While I've been able to get ExternalInterface to work
correctly in both directions (.NET to Flash/Flex and Flash/Flex to
.NET) in a WinForms application, I can't get it to do the same when
it is embedded in a UserControl inside of a Custom Task Pane in
Office 2007 (Excel). I'm getting the very general E_Fail COM error.
I used the IntrovertIM C# example from the help docs as a starting
point. In fact, I'm using that ExternalInterface proxy.
I'm having no problem calling out of Flex to the container
(.NET UserControl), but when I call the methods exposed (via
addCallback) in the Flex app. it doesn't work. As I said, it works
fine in a WinForms app. But, in a Custom Task Pane, it doesn't seem
to work. In Office 2007, your UserControl that makes up the Custom
Task Pane is wrapped pretty deeply... control inside of control
inside of control. Not sure if this is causing any issues.
Has anybody else tried to do this? Has anyone had success?
Not just with .NET WinForm to Flex integration, but with a
UserControl? I do know it seems like an odd thing to do... but it
will suit our approach nicely. I hope I can figure it out... I've
already been able to do the same using WPF... but Flex seems like a
better overall approach so I'd like to make this work. Any thoughts
or links pointing me in the right direction will be much
appreciated... So you know, I'm pretty new to Flex... which might
have something to do with it as well... anyway... thanks in
A little follow-up here... I just dropped a WebBrowserControl
into my UserControl and pointed it at an HTML page where the Flex
App./SWF was located. Then, I just use the Web Control as a proxy
Web Browser via InvokeScript. Once in, it's easy to call into Flex
via ExternalInterface. The other way is equally easy... call from
methods in the Add-In.
This works fine since the communication between the Flex in
the Custom Task Pane need only be minimal. So, it works well
enough. If anybody wanders onto a solution for the previous post,
I'd love to hear it: email@example.com.