gtk:expression-evaluate (expression object value)

expression -- a gtk:expression instance
object -- a g:object instance for the evaluation
value -- an initialized g:value instance

True if the expression could be evaluated.

Evaluates the given expression and on success stores the result as a g:value instance in gvalue. The GType of the returned value will be the type given by the gtk:expression-value-type function.

It is possible that expressions cannot be evaluated - for example when the expression references objects that have been destroyed. In that case false will be returned.

See the gtk:expression-evaluate-value function for a variant that does not need an g:value instance, but returns the value.