Message-ID: <43A1E8A3.108 at rftp.com>
Date: Thu, 15 Dec 2005 14:05:23 -0800
From: Robert Roessler <robertr at rftp.com>
Organization: Robert's High-performance Software
MIME-Version: 1.0
To: LablGTK List <lablgtk at math.nagoya-u.ac.jp>
Subject: Re: Question about class ui_manager?
References: <43A165E2.1020806 at rftp.com> <20051215.225622.95506504.garrigue at math.nagoya-u.ac.jp>
In-Reply-To: <20051215.225622.95506504.garrigue at math.nagoya-u.ac.jp>
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Jacques Garrigue wrote:
> From: Robert Roessler <robertr at rftp.com>
> 
>> I am trying to use the method "add_ui" in the ui_manager class to add 
>> a separator element.
>>
>> It looks to me like the "name" parameter should be handled like the 
>> action parameter - they both should be of type "string option", 
>> allowing the name to not be present as is already allowed by the action.
> 
> In the documentation, action can be NULL, but nothing is said about
> name.
> If you look the source code, you will see that the function starts
> with:
>   g_return_if_fail (name != NULL);
> 
> So clearly you have to pass a meaningful name...

All right... after looking at gtkuimanager.c, I actually wonder if it
is possible to add separators using this method - at least in "stream
mode", where you just keep adding elements after the same parent,
e.g., a menu.

Interestingly, when the UIManager is parsing an XML representation, it
appears to special-case the names for separators: the name pointer
gets set to NULL, and its length to -1.

But add_ui only treats separators specially to the extent that, as you
say, the "no action" case is permitted - you are forced to use a name,
which in turn is passed to get_child_node() without being "fixed" as
it is in the parsing case.

Sigh - yes, it works fine to do it the ugly and verbose way -
construct the full XML and pass it to add_ui_from_string for EVERY
separator... I consider this a bug in the underlying GTK
implementation (noting,of course, that I am not an expert on the
subject). ;)

If it is determined by the GTK people that it needs fixing, and is
fixed by allowing NO name, THEN LablGTK would need to switch to a
string option typing for name... if it is fixed by recognizing a
"magic" name of "separator" (not as good, I think), then nothing would
need to happen with the binding.

Robert Roessler
robertr@rftp.com
http://www.rftp.com