Function canvas_draw_box 

pub unsafe extern "C" fn canvas_draw_box(
    canvas: *mut Canvas,
    x: i32,
    y: i32,
    width: usize,
    height: usize,
)

Draw box of width, height at x,y

Arguments

• canvas - Canvas instance
• x - x coordinate
• y - y coordinate
• width - box width
• height - box height