Function fltk::draw::draw_image

pub fn draw_image(
    data: &[u8], 
    x: i32, 
    y: i32, 
    w: i32, 
    h: i32, 
    depth: ColorDepth
) -> Result<(), FltkError>

Draw an image into a widget. Requires a call to app::set_visual(Mode::Rgb8).unwrap()