[英]python tkinter GUI freezes and music player button won't worked for more than once
我怎樣才能讓播放按鈕盡可能多地工作,同時又能夠使用 GUI 的其余部分而不讓它凍結。
我希望能夠多次使用播放按鈕,但它一直在說
類型錯誤:無法腌制 _tkinter.tkapp 對象
當我使用線程時,它會說運行時錯誤:
線程只能啟動一次
from tkinter import *
from tkinter import filedialog
import os
import winsound
import threading
import time
import multiprocessing
audio_list = []
class Main(Frame):
def __init__(self, master):
Frame.__init__(self, master, bg="white")
self.audio_dictionary=audio_list
self.gui()
self.refresh()
Thread_1 = multiprocessing.Process(target=self.gui, args=(self,))
Thread_1.start()
def gui(self):
self.Thread_2 = multiprocessing.Process(target=self.play, args=(self,))
self.play_button= Button(text='Play', command=self.play)
self.play_button.grid(column=0, row=1, sticky='W')
stop_button= Button(text="Stop", command=self.stop)
stop_button.grid(row=1, column=0, columnspan=2, sticky='E')
self.display_songs = Listbox(bd=5, relief=GROOVE)
self.display_songs.grid(row=0, column=0, columnspan=2)
import_button = Button(text="Import", command=self.import_files)
import_button.grid(row=1, column=2, sticky='E')
self.status_window = Listbox(bd=5, relief=GROOVE)
self.status_window.grid(row=0, column=2)
def import_files(self):
self.selected_songs=filedialog.askopenfilenames(filetypes = [("wav file", "*")], title='Select wav files')
counter=0
for y in self.selected_songs:
x=os.path.basename(y)
self.audio_dictionary.append((x,y))
print(x)
self.display_songs.insert(counter, x)
counter+=1
for p in self.audio_dictionary:
print(p)
def play(self):
if self.Thread_2.is_alive() is True:
selection = self.display_songs.curselection()
for item in selection:
song=self.display_songs.get(item)
for c in self.audio_dictionary:
s=c[0]
if song==s:
direct=c[1]
else:
pass
print(direct)
winsound.PlaySound(direct, winsound.SND_FILENAME)
else:
pass
def refresh(self):
window.update()
window.after(100, self.refresh)
def stop(self):
print("Stopped Music")
winsound.PlaySound(None, winsound.SND_FILENAME)
window = Tk()
app = Main(window)
window.mainloop()
您應該避免使用線程。 特別是不要從工作線程調用 Tkinter GUI 方法。 但在本例中,您不需要任何線程,因為 winsound 函數已經支持異步播放聲音:
winsound.PlaySound(filename, winsound.SND_FILENAME | winsound.SND_ASYNC)
如文檔所述,如果您想停止當前播放的聲音,則將 None 作為第一個參數傳遞。
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