Is there any need of access hardware library to use DDE. If

[PakAsia]

I have upgraded my code through labview 4 to labview 8.5 and windows from 98 to Xp2000.

But my hardware is not responding to upgraded code i.e Labview8.5 and XP.

But i can still access my hardware through windows98 and labview4

I have to use upgraded code

[falkpl]

Not sure of the question but if you are looking for DDE (yes we still need to support old applications that use dde) it is hiden way down in the vilib/platform/dde.llb in more recent versions of Labview.

It is still there and works at least on vista and XP havent tried on win7

[Wayne.C]

Still works on Win7

[PakAsia]

The code I have upgraded contains DDE's. They were working when I am using them with labview 4 and win98 and hardware is accessable. But after mass compile there is no error present but hardware is not responding. Do i need access hardware library or I have to use new DDE's replacing old one.

[falkpl]

DDE is used to exchange data with another application probably not dirrectly the hardware.  What is the DDE connected with?  maybe the application yor are communicationg with doesnt work under the new OS.  Can you verify this?

[PakAsia]

Thanks paul for your reply. I am using DDE to connect with server named sligos server96 which sends commands to ONCE card. I don't have a source code for this server i only have a exe file. I think it does'nt works with xp. Download server96 file and change ini extension with exe.

Do tell me if there is any possibility.

[falkpl]

If the external application doesnt work then you cant do anything form labview.  Your best option is to work with the exe provider to see if you can get a version that is XP compatable.  Get the exe working first then goback and get DDE working.  The problem with DDE is that it is a very old technology and support is not great.