type VerticalSlider = {
disabled: &bool,
value: &f64,
min: &f64,
max: &f64,
step: &[f64, null],
on_change: &fn(v: f64) -> Any,
on_release: &fn(e: null) -> Any,
width: &[f64, null],
height: &Length
};
val vertical_slider: fn(
?#min: &f64,
?#max: &f64,
?#step: &[f64, null],
?#on_change: fn(v: f64) -> Any,
?#on_release: fn(e: null) -> Any,
?#width: &[f64, null],
?#height: &Length,
?#disabled: &bool,
value: &f64
) -> Widget