如何使pygame琐事问题出现在entry小部件中

import pygame
from pygame.locals import *
import sys

pygame.init()

screen = pygame.display.set_mode((800, 600))
entry_font = pygame.font.Font(None, 32)
entry_text = ""

while True:
    for event in pygame.event.get():
        if event.type == QUIT:
            pygame.quit()
            sys.exit()
        elif event.type == KEYDOWN:
            if event.key == K_RETURN:
                # 处理entry小部件中的内容
                print(entry_text)
                entry_text = ""
            elif event.key == K_BACKSPACE:
                entry_text = entry_text[:-1]
            else:
                entry_text += event.unicode

screen.fill((255, 255, 255))
entry_surface = entry_font.render(entry_text, True, (0, 0, 0))
screen.blit(entry_surface, (10, 10))
pygame.display.flip()