Warning gtk_gradient_ref has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated. Increases the reference count of gradient.
The same gradient Since 3.0
See Implementation
Warning gtk_gradient_ref has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated. Increases the reference count of gradient.