Function gen_image1_rect

pub unsafe extern "C" fn gen_image1_rect(
    Image: *mut Hobject,
    PixelPointer: Hlong,
    Width: Hlong,
    Height: Hlong,
    VerticalPitch: Hlong,
    HorizontalBitPitch: Hlong,
    BitsPerPixel: Hlong,
    DoCopy: *const c_char,
    ClearProc: Hlong,
) -> Herror