A.py

import pygame
from pygame import locals
pygame.init()
screen=pygame.display.set_mode((640,480))
bg_img=pygame.image.load('background.png')
play_img=pygame.image.load('play.png')
stop_img=pygame.image.load('stop.png')
last_img=pygame.image.load('last.png')
next_img=pygame.image.load('next.png')
logo_img=pygame.image.load('logo.png')
pygame.mixer.music.load('歌曲1.wav')
volume=0.2
pygame.mixer.music.set_volume(volume)
click=0
play_button=stop_img
while True:
    for event in pygame.event.get():
        if event.type==locals.QUIT:
            exit()
        if event.type==locals.KEYDOWN:
            if event.key==locals.K_UP:
                volume+=0.1
                if volume>1:
                    volume=1
                pygame.mixer.music.set_volume(volume)
            if event.key==locals.K_DOWN:
                volume-=0.1
                if volume<0:
                    volume=0
                pygame.mixer.music.set_volume(volume)
        if event.type==locals.MOUSEBUTTONDOWN:
            click+=1
            if click%2==0:
                pygame.mixer.music.unpause()
                play_button=stop_img
            else:
                pygame.mixer.music.pause()
                play_button=play_img
    if pygame.mixer.music.get_busy()==False:
        pygame.mixer.music.play()
    screen.blit(bg_img,(0,0))#填充背景
    screen.blit(play_button,(270,330))#暂停按钮
    screen.blit(logo_img,(170,60))#中间logo图
    screen.blit(last_img,(120,350))#上一曲
    screen.blit(next_img,(420,350))#下一曲
pygame.display.update()