[Glade-devel] Property Binding Support: Present and Future

[tristan.van.berkom at gmail.com (Tristan Van Berkom)]

On Thu, Sep 1, 2011 at 10:07 PM, Denis Washington <denisw at online.de> wrote:
> Am 01.09.2011 20:55, schrieb Tristan Van Berkom:
> > > > Regarding transformation, would'nt providing default transformations
> > > > (int<-> ? string, percentage<-> ? double in 0...1, etc.. ) make you life
> > > > easier by not supporting user provided functs while covering 90%
> > > > percent of use cases ?
> > >
> > > That's a nice idea and would also benefit programmatic uses of
> > > g_object_bind_property(). These functions would have to be in GLib,
> > > though; otherwise, using them would require an external library where
> > > they are defined in.
> >
> > GBinding already defaults to using default transformation functions.
>
> Really? This isn't documented anywhere. Thanks for mentioning! I admit
> that this makes the need for transformation functions much less
> pressing, but they are still a very useful feature.

Yeah, the best documentation I find is, when calling the _bind_full() function
and passing a NULL transform function "the default will be used" ;-)

In gbinding.c its quite clear... the default is to try g_value_copy() first and
then resort to g_value_transform().

Cheers,
       -Tristan