# To subscribers of the xforms list from Steve Lamont <spl@ncmir.ucsd.edu> :
> 1. When I define ranges and the stepsize for a thumbwheel or a slider,
> the floats are displayed with ',' instead of '.' (that's fine for
> a german). However, the emitted code also contains ',' resulting in
> code which cannot be compiled. Is this a bug in fdesign or can I do
> anything about it?
I think I'd use a filter to emit the displayed values. Something like
const char *filter( FL_OBJECT *obj, double value, int prec )
{
static char buffer[32];
sprintf( buffer, "%.*f", prec, value );
*( strchr( buffer, '.' ) ) = ',';
return buffer;
}
This filter should work for either counters or sliders. There's no
provision for a filter for thumbwheels.
> 2. I am looking more or less continuously for a simple and quick
> solution for porting an xforms/OpenGL based application to Windows.
I never touch Windows, so I can't say.
> 3. I am currently planing the development of a new tool containing
> something like a simple spreadsheet which should be able to hold
> text and figures. My current plan is to create a form representing
> a row on the fly and put it several times (up to a few hundred) into
> a formbrowser.
> - Does anyone see performance problems (scrolling, updating, etc) with
> this approach?
Good question. I expect that there may be some flicker. I use a
formbrowser to display several dozen forms scrolled vertically and
have problems with it, but that's on an older SGI. Faster CPUs and
graphics subsystems may be less of a problem.
> - Is there a better way to do this task with xforms?
Dunno. Sounds to me to be as good an approach as any.
> - In order to do this, I need to couple horizontal sliders from two
> formbrowsers (the first containing the column description, the
> second containing the data fields). What is the best way to do
> this?
I'm not sure I follow. Shouldn't one track the other in lockstep?
spl
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