---

import ctypes
import random
import time

user32 = ctypes.windll.user32
gdi32 = ctypes.windll.gdi32

SW = user32.GetSystemMetrics(0)
SH = user32.GetSystemMetrics(1)

hdc_screen = user32.GetDC(0)
hdc_mem = gdi32.CreateCompatibleDC(hdc_screen)
hbitmap = gdi32.CreateCompatibleBitmap(hdc_screen, SW, SH)
gdi32.SelectObject(hdc_mem, hbitmap)

class BITMAPINFOHEADER(ctypes.Structure):
    _fields_ = [
        ("biSize", ctypes.c_uint32),
        ("biWidth", ctypes.c_int32),
        ("biHeight", ctypes.c_int32),
        ("biPlanes", ctypes.c_uint16),
        ("biBitCount", ctypes.c_uint16),
        ("biCompression", ctypes.c_uint32),
        ("biSizeImage", ctypes.c_uint32),
        ("biXPelsPerMeter", ctypes.c_int32),
        ("biYPelsPerMeter", ctypes.c_int32),
        ("biClrUsed", ctypes.c_uint32),
        ("biClrImportant", ctypes.c_uint32)
    ]

class BITMAPINFO(ctypes.Structure):
    _fields_ = [
        ("bmiHeader", BITMAPINFOHEADER),
        ("bmiColors", ctypes.c_uint32 * 3)
    ]

bi = BITMAPINFO()
bi.bmiHeader.biSize = ctypes.sizeof(BITMAPINFOHEADER)
bi.bmiHeader.biWidth = SW
bi.bmiHeader.biHeight = -SH
bi.bmiHeader.biPlanes = 1
bi.bmiHeader.biBitCount = 32
bi.bmiHeader.biCompression = 0

while True:
    gdi32.BitBlt(hdc_mem, 0, 0, SW, SH, hdc_screen, 0, 0, 0x00CC0020)

    x = random.randrange(0, SW - 10, 10)
    shift = random.choice([-10, 10])

    gdi32.BitBlt(
        hdc_screen,
        x,
        shift,
        10,
        SH - abs(shift),
        hdc_mem,
        x,
        0 if shift > 0 else abs(shift),
        0x00CC0020
    )

    time.sleep(1)