Tkwindde within Ruby

[frdsa]

Hi:

I am using Tkwindde within Ruby and having some problems.
I call a application/service called TOS.

My call to TKwindde is
tk_call("DDE", "REQUEST", "TOS", "MARK", datafield)
sometimes I get my data in, sometimes I get first N/A returned.
If I run the dde call in excel I see the N/A coming in first with is later substituted for the correct value.

It seems the way I am using tkwindde; my tk_call doesnot wait long enough for the full answer.

I have been looking for call_backs and other solutions; but so far no result.

When I run my dde command in a excel environment and use a dde trace. I see Excel making more 'async' call to my TOS application.

Any help appreciated.!

Ernst

 

[frdsa]

It seems I am the last person using DDE.
I tried Ruby-forum for this post; no reaction for over a week.

I am stuck and have no alternative. My data vendor only allows DDE as a method to access the data.

- Who wrote the TKWinDDe; is there still a project team around?
- Is this the right forum for this question?

 

[Bong]

It may very well be the right forum but that doesn't mean anyone here is any more knowledgeable than you on this issue. I have never used Ruby; I've never heard of tkwindde; and, while I've used DDE, I haven't used it in Tcl.

Tcl includes a DDE utility:

NAME
dde - Execute a Dynamic Data Exchange command
SYNOPSIS
package require dde 1.2
dde servername ?topic?
dde execute ?-async? service topic ?data?
dde poke service topic item data
dde request ?-binary? service topic ?data?
dde services service topic ?data?
dde eval ?-async? service topic ?data?
DESCRIPTION
DDE COMMANDS
dde servername ?topic?
dde execute ?-async? service topic data
dde poke service topic item data
dde request ?-binary? service topic item
dde services service topic
dde eval ?-async? topic cmd ?arg arg ...?
DDE AND TCL

If you're running a script from the Tcl shell, you can use that. If you're running Ruby, I don't know.

_________________
Bob Rashkin

 

[frdsa]

Thanks Bob; for your reply.

TkWinDDe is include in the ruby TK package.
and handles the command as you describes them.
The problem is this is a very limited subset of DDE commands possible.
As I found out on the website quote below; you can set the time which the dderequest command waits for the server to answer. I am under the impression that my 'request' is timed-out (often, but not always).
I tried to add the command 'setoption' to the TK lib; so far not successful.

http://msdn2.microsoft.com/en-us/library/as3e74s4(VS.80).aspx

DDE Functions