Groups > comp.lang.basic.visual.misc > #724

Re: How to tell when an ocx method call is finished?

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From	mike <spamme9@gmail.com>
Newsgroups	comp.lang.basic.visual.misc
Subject	Re: How to tell when an ocx method call is finished?
Date	Tue, 24 Jan 2012 23:29:37 -0800
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On 1/24/2012 10:18 AM, ralph wrote:
> On Tue, 24 Jan 2012 09:10:47 -0800, mike<spamme9@gmail.com>  wrote:
>
>> I'm trying to make the Softmark USB to GPIB converter work.
>> The vendor is unwilling to supply any documentation of sample programs
>> or ANYTHING other than a crippled demo program.
>> I've fixed the hardware, but the firmware doesn't support my fix.
>> I've been experimenting, trying to reverse engineer the .ocx file that
>> came with it.
>>
>> Doing a GPIB handshake for every byte in visual basic is excruciatingly
>> slow, but I'd like to use this turkey for something.
>>
>> Problem is that there's an ocx method to write the ports.
>> But it can take as much as 300ms for it to happen.
>> And there's no feedback, so I have to poll the registers,
>> which ain't valid for up to 300ms.
>>
>> So, is there a way to tell when the method has finished?
>> I've used wait for single object to call programs
>> using the shell.  Is there something similar that I can
>> use on an unknown "black box" call thru an ocx?
>>
>> Thanks, mike
>
> Not really. Depends on the threading model, which for VB likely means
> a single thread and it will take as long as it takes.
>
> You might try WinDbg ...
> http://msdn.microsoft.com/en-us/windows/hardware/gg463009
> This will allow a lot of peeking.
>
> There are various ICE products available. Most need two computers and
> are expensive. $200 and up.
>
> But Frankly I'm with Auric ... why waste time on it? Get a refund.<g>
>
> -ralph
Thanks, for the inputs, I'll check it out.
I bought it used, so return is not an option.
I'm not concerned with how long the command takes.
I just want to know when it's done, so I can do more stuff.
I've got read and write queues stacked up and the data is
all out of sync.
Peeking at a debugging tool may not help.  I need real time
data at run time for the program to act on.
I'd just wait, but it takes half a second on some stuff.
Not speedy enough to be useful.  And waiting too long doesn't
work either.  The bus may be timing out????

Yes, I know it's not cost effective to waste time on it.
I just want to figger it out and make it work.
Thanks, mike

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Thread

How to tell when an ocx method call is finished? mike <spamme9@gmail.com> - 2012-01-24 09:10 -0800
  Re: How to tell when an ocx method call is finished? "Auric__" <not.my.real@email.address> - 2012-01-24 17:52 +0000
  Re: How to tell when an ocx method call is finished? ralph <nt_consulting64@yahoo.net> - 2012-01-24 12:18 -0600
    Re: How to tell when an ocx method call is finished? mike <spamme9@gmail.com> - 2012-01-24 23:29 -0800
  Re: How to tell when an ocx method call is finished? "Farnsworth" <nospam@nospam.com> - 2012-01-25 20:19 -0500
    Re: How to tell when an ocx method call is finished? mike <spamme9@gmail.com> - 2012-01-26 11:02 -0800
      Re: How to tell when an ocx method call is finished? "Farnsworth" <nospam@nospam.com> - 2012-01-28 14:25 -0500
        Re: How to tell when an ocx method call is finished? mike <spamme9@gmail.com> - 2012-01-28 15:01 -0800
          Re: How to tell when an ocx method call is finished? "Farnsworth" <nospam@nospam.com> - 2012-01-29 22:42 -0500

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