On Fri, 27 Jul 2001, Paul Nevai wrote:
> Dear Palm:
>
> I noticed that some functions such as "Err DmOpenDatabaseInfo (...);" always
> return the same value no matter what. E.g., DmOpenDatabaseInfo () always
> returns errNone. Why not "void" then? Am I missing something? Do you want to
> keep your future options open? Thanks!
well, maybe in *future* versions of the os, they may include a check
and have an error code for such a function (even if it is not there
now) - for example, in 5.0, they may protect some databases so you
cannot use the DmOpenDatabaseInfo call, and maybe return an error
code like errDmAccessDenied
making it return void would now allow this "expandability" :(
> Example. Is it still prudent to use
>
> if (DmOpenDatabaseInfo (...) == errNone)
> ...
>
> ???
well, errNone is 0 - so, you can probably just do this:
if (DmOpenDatabaseInfo(...))
... // failed
else
... // worked :)
but, thats bad coding style :) == errNone is definately better.
// az
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