pygame全屏游戏图形切换时重新进入游戏风

Question

这是我的密码：

import pygame

# Initialize
pygame.init()
screenInfo = pygame.display.Info()
displayWidth = screenInfo.current_w  # 1920 on my pc
displayHeight = screenInfo.current_h  # 1080 on my pc
gameDisplay = pygame.display.set_mode((displayWidth, displayHeight), pygame.FULLSCREEN)
quit_game = False

def HandleEvents():
    """
    Handle quit requests from user
    """
    global quit_game
    for event in pygame.event.get():
        if event.type == pygame.QUIT or (event.type == pygame.KEYDOWN and event.key == pygame.K_q):
            quit_game = True


while not quit_game:
    HandleEvents()
    gameDisplay.fill((0, 0, 0))
    pygame.draw.circle(gameDisplay, (255, 255, 255), (displayWidth/2, displayHeight/2), 20)
    pygame.display.update()

当我运行它时，白色圆圈会按预期出现在屏幕中间，但当我按alt+esc切换到另一个窗口，然后按图标重新进入程序时，白色圆圈会向右移动并保持不变，无论我再重新进入程序多少次。你知道吗

When I run the program at first

When I re-enter the program