Windows > Plug-in Development

COM/Ole Automation No Worky

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earache:
Maybe I'm a total idiot, but I've tried both Delphi 7 and C#/.NET to control Media Center via out of process automation.

In both environments I get a "Class not registered" error, or one of a similar nature.

Am I missing something?  Do I have to regsvr32 something?

Nikolay:
earache,

You receive the message because you are trying to use GetActiveObject. If you receive the error from the function call CreateInstance.

For more info see MJAutomation documentation:
http://www.musicex.com/mediacenter/DevZone/MJAutomation.html

Nikolay

earache:
I get it both ways.

In delphi,

var test:Variant;

test=CreateOleObject("MediaJukebox Application");

That yeilds a "Invalid class string".  Doing it with GetActiveOleObject() gets the same error.

In C#, I've used the standard:

IMJAutomation mj=new MJAutomation();

and

IMJAutomation mj=(IMJAutomation)System.Runtime.InteropServices.Marshal.GetActiveObject("MediaJukebox Application");

Both yielding in class not registered errors.  I suspect this is a registry issue?  I dunno.  I'm confused.

Thanks :)

JeffreyK:
What build of MediaCenter are you using?

Have you tried rebooting the machine?  I have run into errors before with OLE that go away with a reboot (especially just after installing new software or running into a crash in an app using OLE).

-JeffreyK

earache:
Media Center Registered 9.0.180

I've tried rebooting, but no go.  Wondering if I should re-install it.  

I've scanned my registry for MediaCenter but there is nothing that indicates any type of OLE Automation Server has been registered.  

Are there registry settings I should try?

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