Re: [BLACKBOX] Long running command and Dialog.ShowStatus

From: Campbell, Robert (SELEX GALILEO, UK) <robert.d.campbell{([at]})nowhere.xy>
Date: Fri, 4 Dec 2009 09:34:33 -0000

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I am neither a computer scientist or Windows expert, so am rather slow
to understand some of this.

What is the implication of "shouldn't be needed in modern, well-written
applications"? Is it that that my programs are not modern and
well-written,
or is it that BlackBox is not?

If threads are the answer that I (and obviously some other people) are
looking
for how do we exploit them?

Cheers

Robert


PS - What is "Dijkstra's loop"; even Google doesn't seem to know?


>> >-----Original Message-----
>> >From: BlackBox [mailto:BLACKBOX{([at]})nowhere.xy
>> >Sent: Friday, 4 December 2009 9:04 AM
>> >
>> >Surely these problems (apparent hanging of BlackBox, and the
>> >fact that Ctrl-Break does not work as advertised) can and
>> >should be solved at a lower level than imposing lots of
>> >awkward logic into every application?
>> >
>>
>> I suspect not as these problems are *application-specific*
>> and under the
>> control of the application programmer. If you develop a
>> single-threaded
>> Windows application it can only respond to user interaction
>> while it is
>> 'idle' and not involved in any other processing. A relevant
>> article "Using
>> Messages and Message Queues" is at:
>>
>> http://msdn.microsoft.com/en-us/library/ms644928(VS.85).aspx
>>
>> Note the comment added to the end:
>>
>> "Lengthy operations should always be done in a separate thread ...
>> PeekMessage shouldn't be needed in modern, well-written
>> applications."
>>
>> Regards,
>> Chris
>>
>> --
>> Chris Burrows
>> CFB Software
>> Armaide: ARM Oberon-07 Development System
>> http://www.cfbsoftware.com/armaide
SELEX Sensors and Airborne Systems Limited
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Received on Fri Dec 04 2009 - 10:34:33 UTC