[ NoAccessorMethod ]
[ Version ( deprecated = true , deprecated_since = "2.46." ) ]
public double em { get; }
Warning: em is deprecated since 2.46..
Exact width, in pixels, of the rendered SVG before calling the size callback as specified by [method@Rsvg.
Reading each of the size properties causes the size of the SVG to be recomputed, so reading both the `em` and `ex` properties will cause two such computations. Please use [[email protected]_intrinsic_dimensions] instead.
Handle.set_size_callback].