Function ImDrawList_AddImageRounded 

pub unsafe extern "C" fn ImDrawList_AddImageRounded(
    this: *mut ImDrawList,
    tex_ref: ImTextureRef,
    p_min: *const ImVec2,
    p_max: *const ImVec2,
    uv_min: *const ImVec2,
    uv_max: *const ImVec2,
    col: ImU32,
    rounding: f32,
    flags: ImDrawFlags,
)