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Ian Boyd
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 Posted: Thu Aug 11, 2005 7:50 pm Post subject: What Delphi object should i start with to "implemnt" a dispi |
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i know i cannot directly implement a dispinterface.
i know that the DispID's are used in a call to IDispatch.Invoke.
i need to connect an object that implements IDispatch to a Microsoft COM
Object (e.g. Outlook application).
i know that i'm going to have to create an object that implements IDispatch,
and use ConnectEvents to connect it to the specific Outlook object i'm
using.
My question is, which if the dozen COM/OLE objects should i be using? Is
there one that can be given the dispinterface i want, and can route the
Invoke's into individual method calls?
Or do i have to implement Invoke myself, and have one huge case statement
that has all the DispID's hard coded?
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John Carlyle-Clarke
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| Posted: Fri Aug 12, 2005 9:21 am Post subject: Re: What Delphi object should i start with to "implemnt" a d |
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"Ian Boyd" <ian.borlandnews010 (AT) avatopia (DOT) com> wrote in
news:42fbac07 (AT) newsgroups (DOT) borland.com:
| Quote: | i know i cannot directly implement a dispinterface.
i know that the DispID's are used in a call to IDispatch.Invoke.
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Well, you can.. perhaps it depends what you mean by "directly". If
you mean that Delphi objects don't have automatic support for it, then
that's true.
I assume you are trying to receive events from an automation server?
This is not too hard. I wrote my own code to do it, based on code in
the OleServer.pas VCL source, and it was actually simpler than I
thought it would be.
And yes, ultimately somewhere there has to be a big case statement :)
| Quote: | i need to connect an object that implements IDispatch to a
Microsoft COM Object (e.g. Outlook application).
My question is, which if the dozen COM/OLE objects should i be
using?
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My object is declared as..
type TCOMServerEventDispatch = class(TObject, IUnknown, IDispatch)
...so everything is hand-rolled. There are Delphi classes which will
support Dispatch interfaces, but they are not really suited for event
sinking.
I would happily share my code with you, but I would suggest you take a
look at the excellent ..
http://www.techvanguards.com/products/eventsinkimp/
... to see if it will do what you want.
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Ian Boyd
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| Posted: Fri Aug 12, 2005 11:20 am Post subject: Re: What Delphi object should i start with to "implemnt" a d |
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i've been there many times in the past. i forgot they talked about event
sinks.
i've hooked up events before, but the events interface was a real interface,
not a dispinterface; so it was much easier to implment. i just
wished/thought/assumed that Delphi has some language or shortcut for
implementing a dispinterface.
Thanks for the clarifications.
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