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Talking to a VFP exe using a com dll
Message
From
14/05/2001 14:10:37
 
 
To
14/05/2001 12:22:46
General information
Forum:
Visual FoxPro
Category:
COM/DCOM and OLE Automation
Miscellaneous
Thread ID:
00506704
Message ID:
00506960
Views:
13
>>>>Sure, but I didn't see anything in the original post which said the EXE could not be modified to do something like this. Stewart, would it be possible to set up a timer in your EXE to poll a message queue?
>>>>zahid
>>>>
>>>
>>>MSMQ has lots of additional overhead. Additional servers may be needed and a PDC is required. This may not be possible for the solution. Simply polling a DBF or text file may be much easier and less expensive.
>>
>>I don't think you need all that overhead with COM+.
>>
>>BOb
>
>Nope, you don't. COM+ and MSMQ are two different things.

I thought MSMQ was rolled into COM+, so you don't need SQL Server any more. They created some type of in memory database, or did that not make it to the release.

From Randy's MSDN article on MSMQ and VFP"

"MSMQ 2.0 will be incorporated directly with future versions of Windows."

I thought that meant part of COM+, I could be wrong. Also, the MSMQ home page says:


MSMQ is fully integrated with other Windows 2000® features such as Microsoft ComPlus Transactions (fomerly known as Microsoft Transaction Server (MTS); Microsoft Internet Information Server (IIS), the built-in Windows 2000 Server Web server; Windows 2000 clustering services; and the Windows 2000 security environment. Because MSMQ is a feature of Windows 2000, MSMQ is ideally suited for use by independent software vendors.


We also find:


MSMQ Triggers Download
MSMQ Triggers is a Message Queuing application that allows you to automatically associate incoming messages in a queue with functionality in a COM component or standalone .exe. With MSMQ Triggers, you can invoke business rules in response to incoming messages without any additional programming required. Likewise, MSMQ Triggers is a simple and scalable mechanism that exposes business logic in MTS packages via Message Queuing. By providing native support within Message Queuing for triggers, you can deploy standard mechanisms for invoking behavior at a queue level.


Anyway, it is certainly an option for the requested question, althought as you say, there are other, less overhead ways to do it on a single, connected system.

BOb
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