pub fn test_slider_set_perc<P: IsA<Widget>>(widget: &P, percentage: f64)
This function will adjust the slider position of all GtkRange
based widgets, such as scrollbars or scales, it’ll also adjust
spin buttons. The adjustment value of these widgets is set to
a value between the lower and upper limits, according to the
This testing infrastructure is phased out in favor of reftests.
valid widget pointer.
value between 0 and 100.