SaxComm8 and svcit.ocx

[Valiz]

Hi,
I am writing a VB6 application that communicates with an embedded
microcontroller through serial com port 17 and using SaxComm8.
The microcontroller needs to be updated every 2-3 seconds and so I had
to make a service out of a VB6 app using svcit.ocx
(ServiceMillCon trol) that does the required updates.
Now, I'd like to be able to retrieve information (send and receive)
from the microcontroller through another VB6 application which
displays the status and other information of/from the microcontroller .
Is there a way to communicate with a service?
Any help would be greatly appreciated.
Thanks in advance.
Valiz.

[J French]

Re: SaxComm8 and svcit.ocx

On 11 Mar 2004 16:27:57 -0800, deva8601@uidaho .edu (Valiz) wrote:
[color=blue]
>Hi,
>I am writing a VB6 application that communicates with an embedded
>microcontrolle r through serial com port 17 and using SaxComm8.
>The microcontroller needs to be updated every 2-3 seconds and so I had
>to make a service out of a VB6 app using svcit.ocx
>(ServiceMillCo ntrol) that does the required updates.
>Now, I'd like to be able to retrieve information (send and receive)
>from the microcontroller through another VB6 application which
>displays the status and other information of/from the microcontroller .
>Is there a way to communicate with a service?
>Any help would be greatly appreciated.[/color]

You could use SendMessage with WM_COPYDATA
- that involves subclassing to receive the data
- RegisterWindowM essage to get a unique Win Message
- SendMessage with HWND_BROADCAST

A cheap and cheerful method is to find the handle of a Textbox in the
target App
- and use WM_SETTEXT to push text into it

[J French]

Re: SaxComm8 and svcit.ocx

On 11 Mar 2004 16:27:57 -0800, deva8601@uidaho .edu (Valiz) wrote:
[color=blue]
>Hi,
>I am writing a VB6 application that communicates with an embedded
>microcontrolle r through serial com port 17 and using SaxComm8.
>The microcontroller needs to be updated every 2-3 seconds and so I had
>to make a service out of a VB6 app using svcit.ocx
>(ServiceMillCo ntrol) that does the required updates.
>Now, I'd like to be able to retrieve information (send and receive)
>from the microcontroller through another VB6 application which
>displays the status and other information of/from the microcontroller .
>Is there a way to communicate with a service?
>Any help would be greatly appreciated.[/color]

I've just had another thought
- use an AX EXE for the communication

They are very good 'brokers' for Inter App communication
Data in the .BAS modules can be 'shared'

[Valiz]

Re: SaxComm8 and svcit.ocx

There is another situation I am facing. The VB6 application that I
made into service using svcit.ocx does not fire Shutdown() event
(where I do some uninitializing stuff like sending some commands to
the microcontroller ) before the system reboots. This service takes
about 5 minutes to start. Going through the event log I found that
after the system boots up, the service tries to start and generates an
error with id7022 "the service hung on starting" and then it starts
after 5 minutes.
Any ideas or reasons why this would happen?
Thanks,
Valiz.
erewhon@nowhere .com (J French) wrote in message news:<4051865c. 12828081@news.b tclick.com>...[color=blue]
> On 11 Mar 2004 16:27:57 -0800, deva8601@uidaho .edu (Valiz) wrote:
>[color=green]
> >Hi,
> >I am writing a VB6 application that communicates with an embedded
> >microcontrolle r through serial com port 17 and using SaxComm8.
> >The microcontroller needs to be updated every 2-3 seconds and so I had
> >to make a service out of a VB6 app using svcit.ocx
> >(ServiceMillCo ntrol) that does the required updates.
> >Now, I'd like to be able to retrieve information (send and receive)
> >from the microcontroller through another VB6 application which
> >displays the status and other information of/from the microcontroller .
> >Is there a way to communicate with a service?
> >Any help would be greatly appreciated.[/color]
>
> I've just had another thought
> - use an AX EXE for the communication
>
> They are very good 'brokers' for Inter App communication
> Data in the .BAS modules can be 'shared'[/color]

[J French]

Re: SaxComm8 and svcit.ocx

On 12 Mar 2004 12:35:25 -0800, deva8601@uidaho .edu (Valiz) wrote:
[color=blue]
>There is another situation I am facing. The VB6 application that I
>made into service using svcit.ocx does not fire Shutdown() event
>(where I do some uninitializing stuff like sending some commands to
>the microcontroller ) before the system reboots. This service takes
>about 5 minutes to start. Going through the event log I found that
>after the system boots up, the service tries to start and generates an
>error with id7022 "the service hung on starting" and then it starts
>after 5 minutes.
>Any ideas or reasons why this would happen?[/color]

The fact that it starts after 5 minututes is peculiar

My guess is that the svcit.ocx has somehow set your App up as a
scheduled task

- unfortunately I'm not familiar with this area