Hi,
I am trying to access COM component - method that takes a IStream (ByRef)
parameter
from ASP (Not ASP.NET).
So far I have had no luck and google drowns my search with ASP.NET
examples...
I mange to create the object and call methods that returns strings (BSTR)
like this
Dim Svr
Set Svr = CreateObject(Ap pID)
Response.write( Svr.Method1)
The second method I need to call takes two parameters:
Method2(ID:Int, ByRef Stream:IStream)
Can anyone give me some hints on how to call this method from ASP?
Thx in advance
Gunnar
5  3066 
Gunnar Liknes wrote: Hi,
I am trying to access COM component - method that takes a IStream
(ByRef) parameter
from ASP (Not ASP.NET).
So far I have had no luck and google drowns my search with ASP.NET
examples...
I mange to create the object and call methods that returns strings
(BSTR) like this
Dim Svr
Set Svr = CreateObject(Ap pID)
Response.write( Svr.Method1)
The second method I need to call takes two parameters:
Method2(ID:Int, ByRef Stream:IStream)
Can anyone give me some hints on how to call this method from ASP? http://support.microsoft.com/default...b;EN-US;244012 http://support.microsoft.com/default...b;EN-US;197956
--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"
Gunnar Liknes wrote: Hi,
I am trying to access COM component - method that takes a IStream (ByRef)
parameter
from ASP (Not ASP.NET).
So far I have had no luck and google drowns my search with ASP.NET
examples...
Append your search expression with -net. It turns the torrent of
dotnet results into a trickle.
--
Mike Brind
"Bob Barrows [MVP]" wrote: Gunnar Liknes wrote: I am trying to access COM component - method that takes a IStream
(ByRef) parameter
from ASP (Not ASP.NET).
So far I have had no luck and google drowns my search with ASP.NET
examples...
I mange to create the object and call methods that returns strings
(BSTR) like this
Dim Svr
Set Svr = CreateObject(Ap pID)
Response.write( Svr.Method1)
The second method I need to call takes two parameters:
Method2(ID:Int, ByRef Stream:IStream)
Can anyone give me some hints on how to call this method from ASP?
http://support.microsoft.com/default...b;EN-US;244012
http://support.microsoft.com/default...b;EN-US;197956
Thank you for a quick response:-)
I think I use the correct calling convention now, however my problem is (I
think)
that I cant figure out how to create the IStream Interface.
Do I have to use CreateObject for that?
I was thinkning about somethnig like:
Dim MyStream
Set MyStream = Server.CreateOb ject("Something .IStream") or
Set MyStream = Server.CreateOb ject("Something .MemoryStream")
and then
Svr.GePicture (1), MyStream
' The second parameter is actually IUnknown ** But the implementation uses
'QueryInterface to obtain a IStream interface from it.
Response.Binary Write(MyStream, MyStream.Size)
Am I near something here?
Gunnar
Gunnar Liknes wrote: http://support.microsoft.com/default...b;EN-US;244012
http://support.microsoft.com/default...b;EN-US;197956
Thank you for a quick response:-)
I think I use the correct calling convention now, however my problem
is (I think)
that I cant figure out how to create the IStream Interface.
Do I have to use CreateObject for that?
I was thinkning about somethnig like:
Dim MyStream
Set MyStream = Server.CreateOb ject("Something .IStream") or
Set MyStream = Server.CreateOb ject("Something .MemoryStream")
and then
Svr.GePicture (1), MyStream
' The second parameter is actually IUnknown ** But the implementation
uses 'QueryInterface to obtain a IStream interface from it.
Response.Binary Write(MyStream, MyStream.Size)
I don't believe interfaces are usable from script. you will need to create
an intermediate object, either in VB or C++
--
Microsoft MVP - ASP/ASP.NET
Please reply to the newsgroup. This email account is my spam trap so I
don't check it very often. If you must reply off-line, then remove the
"NO SPAM"
"Gunnar Liknes" <gliknesATgloba lDASHsatcomDOTc om> wrote in message
news:44******** @news.broadpark .no... "Bob Barrows [MVP]" wrote: Gunnar Liknes wrote: I am trying to access COM component - method that takes a IStream
(ByRef) parameter
from ASP (Not ASP.NET).
So far I have had no luck and google drowns my search with ASP.NET
examples...
I mange to create the object and call methods that returns strings
(BSTR) like this
Dim Svr
Set Svr = CreateObject(Ap pID)
Response.write( Svr.Method1)
The second method I need to call takes two parameters:
Method2(ID:Int, ByRef Stream:IStream)
Can anyone give me some hints on how to call this method from ASP?
http://support.microsoft.com/default...b;EN-US;244012
http://support.microsoft.com/default...b;EN-US;197956
Thank you for a quick response:-)
I think I use the correct calling convention now, however my problem is (I
think)
that I cant figure out how to create the IStream Interface.
Do I have to use CreateObject for that?
I was thinkning about somethnig like:
Dim MyStream
Set MyStream = Server.CreateOb ject("Something .IStream") or
Set MyStream = Server.CreateOb ject("Something .MemoryStream")
and then
Svr.GePicture (1), MyStream
' The second parameter is actually IUnknown ** But the implementation uses
'QueryInterface to obtain a IStream interface from it.
Response.Binary Write(MyStream, MyStream.Size)
Am I near something here?
You are. The thing your missing is that Response _is_ an implementation of
IStream. So what you want is this:-
Svr.GePicture(1 ), Response
Just don't forget to set the ContentType property to the correct mimetype
for the image format being sent.
Gunnar
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