Re: how to make radio buttons without default selected? and, how to force all de-selected?

[agan ufam edu br]

Hi Ben ...

IMHO I think that it is not a good idea , because the radio button's
"definitions", in essence, do not allow that none button to be active.
Maybe, to customize the radio button, and create a new widget based on it
may be a good solution.

PS: Sorry for my not pretty english ...

Regards ..

Antonio Gomes


> On Tue, Jan 25, 2005 at 01:27:14PM -0500, Owen Taylor wrote:
>> On Mon, 2005-01-24 at 13:24 -0800, Ben Johnson wrote:
> ...
>> > like a set of related toggle buttons.  Now I want them to behave
>> *more*
>> > like toggle buttons.  The problem is, there is always at least one of
>> > the buttons selected.  I want the set to start out with no default
>>
>> Maybe just use a set of related toggle-buttons? Even if you can find
>> a workaround, it could easily break with a future version of GTK+.
>
> That's actually what I did before I realized I was probably recreating a
> wheel.  So, I already have something that works, but it's a bit of hack.
> I'm starting to think about creating a new widget type, which would be a
> lot cleaner than what I have now, but even that seems silly.
>
> What I think I may really want is a one or two additional functions
> added to the GtkRadioButton interface.
>
> void
> gtk_radio_button_allow_deselect(GtkRadioButton * button, gboolean allow);
>
> I'm thinking that...  if I call this function on a given radio button,
> no matter what it looks like (regular radio button or toggle button),
> the result of a user clicking on an activated button is its
> de-activation (and a "toggled" signal emmition, etc).  The de-activation
> could also be accomplished through the gtk_toggle_button_set_active()
> function.
>
> I think that would be a pretty reasonable change.  It would add to the
> flexibility and utilty of the widget without adversly affecting its
> character.  Of course... I haven't even looked at the code, so I don't
> know what problems this might cause.  (maybe I'll take a look.)
>
> What do you think?  Good idea?  What are the chances of a change like
> this making it into the library?
>
> - Ben
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