Installing Outlook Client Extension in ComposeForward context

[mb]

Hi,

is it possible to force Outlook, that it installs CE only when message
is forwarded ?

I'm using ECF file, but it installs CE always when new messages is
composed ("Outlook Commands" key from [Item] section seems to have no
effect).

I need to find out if message is forwarded. I use OnWriteComplete()
event, but I can see no way to distinguish between newly created mail
message and forwarded message. I can't use PR_CONVERSATION_INDEX
property, and I also don't want to use PR_SUBJECT_PREFIX.

So, is there any way I can use, to be sure, that I work only with
forward messages ?


The ECF file I use:
--------------------------------------------------

[General]
Display Name=MyCE
Description=MyCe
Path=c:\temp\MyCE.dll
Entry Point=7
Client Version=4.0
Misc Flags=NoOptimizeInterfaceMap;MoreContexts;InstallCommandsEarly

[Exchange Client Compatibility]
Exchange Interface Map=1001000

[Application]
Events=OnStartup;OnShutdown

[Session]
Events=OnLogon;OnLogoff;OnDelivery

[Item]
Outlook Commands=ComposeForward
Item States=Compose
Events=OnCheckNames;OnCheckNamesComplete;OnRead;OnReadComplete;OnWrite;
OnWriteComplete;OnSubmit;OnSubmitComplete;InstallCommands