The 'value-changed' signal is emitted when the current value
that represent the object changes. value is the numerical
representation of this new value. text is the human
readable text alternative of value, and can be NULL if it is
not available. Note that if there is a textual description
associated with the new numeric value, that description
should be included regardless of whether or not it has also
changed.
The 'value-changed' signal is emitted when the current value that represent the object changes. value is the numerical representation of this new value. text is the human readable text alternative of value, and can be NULL if it is not available. Note that if there is a textual description associated with the new numeric value, that description should be included regardless of whether or not it has also changed.