App. builder - creating a dll more functions

Hi,
here I found, that is possible to create from LabView a dll this more functions. Each added VI, will be one function - http://forums.ni.com/ni/board/message?board.id=170&message.id=19858&query.id=416227 (question no. 3)
But I would need that the VIs (functions) are connected together, that one function will use what the another function did..
For example:
I'd like to create a dll (for TCP/IP communication) with 3 functions (Open connection, Write data, close connection). First, I call dll function Open connection, then can call several times function Write data and at the end, I want to close connection with the last function.
If I tried to create such dll from VIs, which contains blocks for these tasks, I was not able to create "a bridge" between the VIs - in my example it would be wire (connection ID) between blocks TCP Open Connection TCP Write and TCP Close Connection.
Has somebody experience with this?
Thanks

Hi Ondrej7,
      Here's some example code that may be all you need! (just remove ".txt")
This DLL will only manage a single connection, but you don't have to pass any connection-reference to it.  I know nothing about Testpoint and don't know if we can pass strings Out of the DLL.  If this is a problem, then we should try outputting an array-of-bytes instead.
Cheers!
Message Edited by tbd on 10-06-2007 08:58 PM
"Inside every large program is a small program struggling to get out." (attributed to Tony Hoare)
Attachments:
DLL.dll.txt ‏56 KB
DLL.llb.txt ‏120 KB
DLL.bld.txt ‏4 KB

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