Function ImDrawList_AddBezierCubic 

pub unsafe extern "C" fn ImDrawList_AddBezierCubic(
    self_: *mut ImDrawList,
    p1: ImVec2_c,
    p2: ImVec2_c,
    p3: ImVec2_c,
    p4: ImVec2_c,
    col: ImU32,
    thickness: f32,
    num_segments: c_int,
)