save project

my_music.py

@@ -53,12 +53,27 @@ while True:
                 else:
                 else:
                     play_button = play_img
                     play_button = play_img
                     pygame.mixer.music.pause()
                     pygame.mixer.music.pause()
-                
+                if x>120 and x<220 and y>350 and y<400:
+                    num=num-1
+                    if num<0:
+                        num=len(music_list)-1
+                    pygame.mixer.music.load(j+"//"+music_list[num])
+                    pygame.mixer.music.play()
+                    click=0
+                    play_button=stop_img
+                if x>420 and x<520 and y>350 and y<400:
+                    num=num+1
+                    if num>len(music_list)-1:
+                        num=0
+                    pygame.mixer.music.load(j+"//"+music_list[num])
+                    pygame.mixer.music.play()
+                    click=0
+                    play_button=stop_img
     if pygame.mixer.music.get_busy() == False:
     if pygame.mixer.music.get_busy() == False:
         num+=1
         num+=1
         if num >len(music_list)-1:
         if num >len(music_list)-1:
             num = 0
             num = 0
-        pygame.mixer.music.load(music_list[num])  # 载入音乐 
+        pygame.mixer.music.load(j+"//"+music_list[num])  # 载入音乐 
         pygame.mixer.music.play()
         pygame.mixer.music.play()
 
 
     # 绘制画面
     # 绘制画面