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Subject:Re: 2 Instances Of Paradox
Date:Tue, 16 Jan 2018 18:03:04 -0800
From:Peter <>
Thank you. #1 is within my abilities. I think #2 I could figure out also.


On 01/14/2018 05:19 PM, Leslie wrote:
> On 14/01/2018 12:19 PM, Tom Krieg wrote:
>> If you're talking about having
>> one instance send an event to another instance, you can't do that (not
>> that I know of).
> There are three methods you could possibly use to communicate across
> instances/processes:
> 1. In the beginning of time Paradox supported DDE so it just might be
> possible that it still does as I doubt Corel would have removed it (nor
> would they have created a COM interface). So I would look at this
> possibility first.
> 2. The next option is to use the Windows message loop. Fields in Paradox
> are actually Windows and have a Window Handle. So you could use
> WM_COPYDATA to send data/events - we use this exact method to
> communicate between a native application and a phone PABX system which
> only has an API using CLR (ie .NET)
> 3. the last easyish option is to create a DLL which allocates its own
> memory and is loaded by each process/instance. The memory then
> effectively becomes shared and you would just write a Put() and a Get()
> function to store and retrieve the data.
> There are other methods but then you will need to handle things like 32
> or 64 bit architecture and it would be quite advanced - in which case
> you would not be using Paradox anyway.
> Leslie.
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