gtk/style.go
func (v *StyleContext) SetParent(p *StyleContext) {
	C.gtk_style_context_set_parent(v.native(), p.native())
}
func (v *StyleContext) SetParent(p *StyleContext) {
	C.gtk_style_context_set_parent(v.native(), p.native())
}
// SetParent is a wrapper around gtk_style_context_set_parent().