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Groups > comp.lang.basic.visual.misc > #729

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

From "Farnsworth" <nospam@nospam.com>
Newsgroups comp.lang.basic.visual.misc
Subject Re: How to tell when an ocx method call is finished?
Date 2012-01-28 14:25 -0500
Organization Aioe.org NNTP Server
Message-ID <jg1i4a$1q8$1@speranza.aioe.org> (permalink)
References <jfmopc$j7g$1@dont-email.me> <jfq9ml$kp8$1@speranza.aioe.org> <jfs83l$tnn$1@dont-email.me>

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"mike" <spamme9@gmail.com> wrote in message 
news:jfs83l$tnn$1@dont-email.me...
> Seems that VB is not waiting for one method to complete before executing 
> another..

No, it's the OCX that is doing that, not VB. It can initiate the action and 
retunes immediately while doing the work in the background. A well designed 
OCX should have an event like "Complete" or "Status" that fires when the 
work is actually finished.

> There's no documentation and I can't find anything in the Object Browser
> that suggests there might be an indication that the ocx command is 
> complete.

Then find another hardware, or perhaps spend weeks in learning how to talk 
to USB directly from VB, and decode what being sent and received. There are 
free tools that record everything being sent and received to the USB port. 
See "Software-only analyzers" at this link:

http://www.lvr.com/development_tools.htm

Main page:

http://www.lvr.com/usb.htm

The USB sniffer might give you some idea of what's going on. There are other 
useful tools in the first link that you may want to explore.

Another option, is to use a parallel port solution, and I think you need two 
ports at least to cover all signals, but I am not sure. This page includes a 
DLL and a sample to allows you talk to "any" port from VB6:

http://www.lvr.com/parport.htm

Look for the heading "Programming Tools for Port I/O and Interrupts".

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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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