Created
October 22, 2017 13:39
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| import tkinter as tk | |
| import tkinter.messagebox as tkMessageBox | |
| import threading | |
| from queue import Queue | |
| # Thread-safe version. | |
| # Tkinter functions are put into queue and called by prompt_thread_loop | |
| # in the main thread. | |
| messagebox_queue = Queue() | |
| def prompt(title='', message='', message_type='INFO'): | |
| if message_type == 'INFO': | |
| messagebox_queue.put((tkMessageBox.showinfo, (title, message), {})) | |
| elif message_type == 'ERROR': | |
| messagebox_queue.put((tkMessageBox.showerror, (title, message), {})) | |
| def prompt_start_thread(func, args=(), kwargs={}): | |
| threading.Thread(target=func, args=args, kwargs=kwargs).start() | |
| def prompt_thread_loop(master): | |
| try: | |
| while True: | |
| func, args, kwargs = messagebox_queue.get_nowait() | |
| func(*args, **kwargs) | |
| except: | |
| pass | |
| master.after(100, lambda: prompt_thread_loop(master)) | |
| if __name__ == '__main__': | |
| root = tk.Tk() | |
| tkMessageBox.showinfo(message='blocking prompt') | |
| prompt_thread_loop(root) # prompt_thread_loop is launched here | |
| prompt_start_thread(lambda: prompt(message='non blocking prompt')) | |
| label = tk.Label(root, text='code after the second prompt.') | |
| label.pack() | |
| root.mainloop() | |
| # 循环查询有无弹窗： | |
| # prompt_thread_loop(root) | |
| # 用法： | |
| # from view import prompt_start_thread, prompt, view | |
| # prompt_start_thread(lambda: prompt(message='asdf', master=view)) |
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