add doc comment of ValueInput draggability
@@ -306,7 +306,8 @@ pub struct Adjuster {
tracker: *mut fltk_sys::fl::Fl_Widget_Tracker,
}
-/// Creates an value input widget
+/// Creates an value input widget, which takes a numeric value.
+/// If a step is set, the value can be also dragged
#[derive(WidgetBase, WidgetExt, ValuatorExt, Debug)]
pub struct ValueInput {
inner: *mut Fl_Value_Input,
