void set_value ( AtkValue* obj, const gdouble new_value )
Sets the value of this object.
This method is intended to provide a way to change the value of the
object. In any case, it is possible that the value can’t be
modified (ie: a read-only component). If the value changes due this
call, it is possible that the text could change, and will trigger
AtkValue::value-changed signal emission.
Note for implementors: the deprecated
method returned TRUE or FALSE depending if the value was assigned
or not. In the practice several implementors were not able to
decide it, and returned TRUE in any case. For that reason it is not
required anymore to return if the value was properly assigned or not.