save project

my_music.py

@@ -41,7 +41,22 @@ while True:
                 if volume < 0:
                 if volume < 0:
                     volume = 0
                     volume = 0
                 pygame.mixer.music.set_volume(volume)
                 pygame.mixer.music.set_volume(volume)
-            
+            if event.key == locals.K_LEFT:
+                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 event.key==locals.K_RIGHT:
+                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 event.type == locals.MOUSEBUTTONDOWN:#按下鼠标事件
         if event.type == locals.MOUSEBUTTONDOWN:#按下鼠标事件
             if event.button ==1:
             if event.button ==1:
                 x,y = event.pos
                 x,y = event.pos