From: dennison@telepath.com
Subject: Re: About to give up...
Date: 1998/08/06
Date: 1998-08-06T00:00:00+00:00 [thread overview]
Message-ID: <6qcblu$f60$1@nnrp1.dejanews.com> (raw)
In-Reply-To: 6qbt86$dh$1@nnrp1.dejanews.com
In article <6qbt86$dh$1@nnrp1.dejanews.com>,
i96danma@my-dejanews.com wrote:
> The first steps were no problem and I quickly got used to the API. The worst
> problems though were the type conversions, where Ada's type checking suddenly
> was an obstacle to overcome, and the fact that you always have to take care of
> the return values, even if you don't care. And it seems as Win32 returns a lot
> of values that are, most of the time, unimportant.
I will typically write my own binding for OS routines which returns an object
of the type I want to deal with. Bindings aren't that tough to write. Just 2
lines of code (not counting any special types you declare for them). Then
I'll write a "thick" binding which provides an Ada-like interface to the OS
routine, and doesn't burden the caller with those useless input and return
values.
Often times in dealing with OS routines written for users of type-unsafe
languages you will have to make use of Unchecked_Conversions. That's ok. Just
be careful.
As for the useless values, just put them into "Trash" variables. No big deal.
T.E.D.
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next prev parent reply other threads:[~1998-08-06 0:00 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-08-06 0:00 About to give up i96danma
1998-08-06 0:00 ` dennison [this message]
1998-08-07 0:00 ` i96danma
1998-08-07 0:00 ` Robert Dewar
1998-08-08 0:00 ` Matthew Heaney
1998-08-08 0:00 ` Robert Dewar
1998-08-08 0:00 ` Matthew Heaney
1998-08-08 0:00 ` Dan Mattsson
1998-09-05 0:00 ` Tom Moran
1998-08-06 0:00 ` Robert Dewar
1998-08-08 0:00 ` Dan Mattsson
1998-08-10 0:00 ` Robert Dewar
-- strict thread matches above, loose matches on Subject: below --
1998-08-16 0:00 Robert Dewar
1998-08-06 0:00 i96danma
1998-08-06 0:00 ` Oliver.Kellogg
1998-08-07 0:00 ` Tarjei Tj�stheim Jensen
1998-08-06 0:00 ` Dale Stanbrough
1998-08-06 0:00 ` Peter Amey
1998-08-06 0:00 ` Tom Moran
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