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Article #25549Re: Re: Problems with XGetDefault() and Xrlib?
From: wyatt
Date: Fri, 08 May 1987 15:14
Date: Fri, 08 May 1987 15:14
33 lines
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2121 bytes
>
> I do not claim first hand knowledge of this situation, But somebody
> here (HP-corvallis) did look into the situation. It turns out the
> defect is likely to be a design defect in the XGetDefault() library
> routine. Here's what I've been told:
>
> The XGetDefault() routine saves the first instance of the program
> argument. Then XGetDefault uses this saved initial instance of your
> program name string for all subsequent calls. [...]
> [...] you were locked out from calling XGetDefault() using any
> other program name. This is clearly an example of a routine doing
> extra work that is not desirable.
I've looked into it too, and it doesn't work quite that way. What
happens is that the data base (/lib/X/Xdefaults, then ~/.Xdefaults) is
opened and read onthe *first* call to XGetDefaults. All lines
beginning with `.', or with the first string given (usually argv[0])
are read and put into a binary tree for subsequent searching. Thus,
subsequent calls do not re-read the database file, and are very fast
at finding the information, which is very good, but there is NO WAY to
re-open the file to get another database set with a different
identifier string. There is also no way (other than a symbolic link
ahead of time) to look anywhere besides ~/.Xdefaults or
/lib/X/Xdefaults.
I believe the V11 resource manager addresses these problems.
--
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!rutgers!husc6!cfa!wyatt From: wyatt@cfa.UUCP Newsgroups: comp.windows.x Subject: Re: Re: Problems with XGetDefault() and Xrlib? Message-ID: <527@cfa.cfa.harvard.EDU> Date: Fri, 8-May-87 11:14:39 EDT Article-I.D.: cfa.527 Posted: Fri May 8 11:14:39 1987 Date-Received: Sat, 9-May-87 08:32:51 EDT References: <3940010@hpcvlo.HP.COM> Organization: Harvard-Smithsonian Ctr. for Astrophysics Lines: 33