Function render_handle 

pub fn render_handle(
    context: &impl IsA<StyleContext>,
    cr: &Context,
    x: f64,
    y: f64,
    width: f64,
    height: f64,
)

👎Deprecated: Since 4.10

Renders a handle (as in Paned and Window’s resize grip), in the rectangle determined by @x, @y, @width, @height.

Handles rendered for the paned and grip classes:

Deprecated since 4.10

context

a StyleContext

cr

a cairo::Context

x

X origin of the rectangle

y

Y origin of the rectangle

width

rectangle width

height

rectangle height