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Date: Mon, 24 Apr 2006 03:56:39 +0700
From: "Alexander J. Herrmann" <ping2weltall AT gmail DOT com>
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Subject: Re: Support for older OS's
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Charles Wilson wrote:

> Corinna Vinschen wrote:
>
>> On Apr 21 15:09, Charles Wilson wrote:
>>
>>> Corinna said [in thread entitled "Windows 95 support ?"]
>>>
>>>> Just the setup tool has some problem, apparently. Cygwin still runs 
>>>> on 95,
>>>
> >>> which will probably change at one point, since it's getting 
> incredibly
> >>> awkward to support it.
>
>>> I've a related question: how "pleasant" must the user experience be on
>>> older operating systems? Specifically, my [still in ITP state] port of
>>
>>
>> Think along the lines of "it's the OSes fault, not mine", and you'll
>> feel better immediately.
>>
>>> Sleep(40)!!
>>
>>   ^^^^^^^^^
>>
>>> It would also work on older OS's -- but every invocation would incur a
>>> 40 second delay.  Which is really *mean*.  I'm not sure I'm ready for
>>
>>
>> Wouldn't that be a 40 *milli*second delay?
>
>
> Yes, you are correct.  You know, I had actually tested this (by 
> inverting the test on whether LoadLibary/GetProcAddress found the 
> GetConsoleWindow() function) on my winXP box.

Sleep(n) big 'S' makes n second delays (Windoze) while sleep(n) make n 
millisecond delays and beside this you got usleep on some systems.

>
> And it hung -- not for 40 milliseconds or 40 seconds but forever.  I 
> assumed it was because I was on winXP and really OUGHT to be using 
> GetConsoleWindow(), and that the code, which obviously worked in 
> cygserver, would also work fine on win98. And that those users would 
> have to live with a 40 second delay.
>
> But that was before I had fixed another problem -- which was the real 
> cause of the lockup on my box.
>
> So, I (a) looked at the msdn docs, and (b) performed my test again -- 
> and sure enough, 40 milliseconds.  Don't I feel silly.
>
> Again.  This is getting to be a habit.
>
> So...it looks like hide_console() is a winner.  You still get a brief 
> flashing cmd window -- but 'regular' rxvt even with the hide_console 
> addition works okay with run.exe (and no flash), so there's no 
> operational change for current users who are using rxvt in the 
> currently expected ways.  This just adds a new capability useful with 
> external scripting.
>
> I'll petition to take over rxvt maintainership soon -- but work is 
> kicking my tail right this instant, so expect a short delay.
>
> -- 
> Chuck
>
> P.S. thanks also to cgf for pointing out my misinterpretation of 
> Sleep().  I'm quite happy to be wrong...
>
> -- 
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>

-- 
And God said"Let there be light."But then the program crashed because he was trying to access the 'light' property of a NULL universe pointer.

Alexander J. Herrmann
Analyst/Programmer
http://www.aiengine.org
Email: Ping2Weltall AT Gmail DOT com


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