Re: Display only X lines in GtkComboBox

[Todd Fisher <toddf simosoftware com>]

Eduardo,
   I had a similar request awhile back and was faced with a similar 
response; so, I set down
about 6 months ago to write my own combobox using a design that made 
more sense to me for the particular application I had in mind.  I've 
made the source code available here: 
http://severna.homeip.net/code.php#combobox

In defense of the scrollbars in a combobox; mine is implemented using a 
searchable
GtkTreeView so people can use typeahead in the combobox.

I also,  used a  variation of the dropshadow patch from 
http://www.xfce.org/gtkmenu-shadow/ which I think looks great :-).  For 
win32 I assume that this patch 
http://bugzilla.gnome.org/show_bug.cgi?id=148535 has been applied for 
the dropshadows to work. 

The areas it could use some work are:
1. The sizing code needs some work right now I'm doing a little extra 
padding to avoid
    horizontal scrollbars up to what I would consider a reasonable 
threshold.
2. I keep my win32 build environment following cvs so I have a lot of 
ifdef GDK_WINDOWING_WIN32 use the latest gtk+ features which should be 
replaced with macros to check for the gtk+ version rather then the 
windowing type.  I consider this minor since the main part of the code 
supports 2.4 but it is something that would be nice to fix.

The features it supports:
1. It can be either editable or non-editable
2. typeahead
3. restricts the visable area to a sensable size
4. dropshadow effect
5. a GtkTreeModel interface for storing data
6. seperators


Hope this can help you :-)
-todd

Paul Pogonyshev wrote:

> Eduardo M KALINOWSKI wrote:
>  
>
> >    I'm using a GtkComboBox to display some strings (stored in a 
> > GtkListStore). The number of strings can become large, but I'd like the 
> > box to display only a small number of them at a time (something like 5), 
> > instead of showing "as many as fits the screen". Is it possible to do 
> > that? I didn't find any function for that in the documentation.
> >    
>
> This is a GTK+/GNOME policy.  Since you popped down the combo box, you
> probably want to see what you can select.  Then why make things more
> difficult (i.e. force you to scroll?)
>
> I have seen a few particularly badly designed applications (non-GTK+)
> where you had a combo box with hundreds of strings and only some 3 of
> them visible at a time.  Not particularly usable, eh?
>
> Paul
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