Warning
gtk_gradient_resolve has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated.
If gradient is resolvable, resolved_gradient will be filled in
with the resolved gradient as a cairo_pattern_t, and TRUE will
be returned. Generally, if gradient can't be resolved, it is
due to it being defined on top of a named color that doesn't
exist in props.
Warning gtk_gradient_resolve has been deprecated since version 3.8 and should not be used in newly-written code. GtkGradient is deprecated. If gradient is resolvable, resolved_gradient will be filled in with the resolved gradient as a cairo_pattern_t, and TRUE will be returned. Generally, if gradient can't be resolved, it is due to it being defined on top of a named color that doesn't exist in props.