save project

my_music.py

@@ -43,12 +43,12 @@ while True:
                 if volume < 0:
                     volume = 0
                 pygame.mixer.music.set_volume(volume)
-
+    
         # 按下鼠标
         if event.type == locals.MOUSEBUTTONDOWN:
             if event.button==1:
                 x,y=event.pos
-            if x>270 and x<370 and y>350 and y<450: 
+            if x>270 and x<370 and y>430 and y<330: 
                 click += 1
                 if click % 2 == 0:
                     play_button = stop_img
@@ -56,6 +56,17 @@ while True:
                 else:
                     play_button = play_img
                     pygame.mixer.music.pause()
+            if event.button==1:
+                x,y=event.pos
+            if x>120 and x<220 and y>350 and y<400:
+                num-=1
+                if num<0:
+                    num=len(path+"\\"sd)-1
+                click=0
+                play_img=stop_img
+                pygame.mixer.music.load(path+"\\"sd[num])
+                pygame.mixer.music.play()
+                
 
     if pygame.mixer.music.get_busy() == False:
         num+=1