PySimpleGUI
GitHub
commit
5624f8ae14
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@ -1,8 +1,8 @@
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import threading
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import time
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import PySimpleGUI as sg
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"""
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Threaded Demo - Uses Window.write_event_value communications
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@ -30,8 +30,7 @@ def the_thread(window):
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i = 0
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while True:
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time.sleep(1)
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sg.cprint(f'thread info (in thread) = {threading.current_thread().name}', c='white on purple')
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window.write_event_value('-THREAD-', i)
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window.write_event_value('-THREAD-', (threading.current_thread().name, i)) # Data sent is a tuple of thread name and counter
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i += 1
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@ -40,27 +39,27 @@ def main():
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The demo will display in the multiline info about the event and values dictionary as it is being
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returned from window.read()
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Every time "Start" is clicked a new thread is started
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Try clicking "go" to see that the window is active while the thread stuff is happening in the background
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Try clicking "Dummy" to see that the window is active while the thread stuff is happening in the background
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"""
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layout = [ [sg.Text('My Window')],
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[sg.Multiline(size=(40,20), key='-ML-', autoscroll=True, reroute_stdout=True, write_only=True, reroute_cprint=True)],
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[sg.Input(key='-IN-')],
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[sg.Button('Go'), sg.B('Start'), sg.Button('Exit')] ]
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layout = [ [sg.Text('Output Area - cprint\'s route to here', font='Any 15')],
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[sg.Multiline(size=(65,20), key='-ML-', autoscroll=True, reroute_stdout=True, write_only=True, reroute_cprint=True)],
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[sg.T('Input so you can see data in your dictionary')],
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[sg.Input(key='-IN-', size=(30,1))],
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[sg.B('Start A Thread'), sg.B('Dummy'), sg.Button('Exit')] ]
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window = sg.Window('Window Title', layout)
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while True: # Event Loop
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event, values = window.read()
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sg.cprint(event, values)
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sg.cprint(f'thread info = {threading.current_thread().name}')
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if event == sg.WIN_CLOSED or event == 'Exit':
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break
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if event == 'Start':
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thread = threading.Thread(target=the_thread, args=(window,), daemon=True)
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thread.start()
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if event.startswith('Start'):
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threading.Thread(target=the_thread, args=(window,), daemon=True).start()
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if event == THREAD_EVENT:
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sg.cprint(f'Data from the thread = {values[THREAD_EVENT]}', colors='white on red')
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sg.cprint(f'Data from the thread ', colors='white on purple', end='')
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sg.cprint(f'{values[THREAD_EVENT]}', colors='white on red')
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window.close()
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@ -1,6 +1,6 @@
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#!/usr/bin/python3
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version = __version__ = "4.25.0.1 Unreleased\nMoved creation of the multi-threaded "
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version = __version__ = "4.26.0 Released 18-Jul-2020"
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port = 'PySimpleGUI'
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@ -6973,7 +6973,6 @@ class Window:
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self.user_bind_event = None # Used when user defines a tkinter binding using bind method - event data from tkinter
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self.modal = modal
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self.thread_queue = None # type: queue.Queue
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self.thread_key = None # type: Any
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self.thread_strvar = None # type: tk.StringVar
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self.read_closed_window_count = 0
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@ -8295,15 +8294,11 @@ class Window:
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def _create_thread_queue(self, key):
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def _create_thread_queue(self):
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"""
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Sets the key that will be returned if a thread communicates with this window.
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:param key:
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:type key: Any
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Creates the queue used by threads to communicate with this window
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"""
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self.thread_key = key
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if self.thread_queue is None:
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self.thread_queue = queue.Queue()
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@ -8312,7 +8307,7 @@ class Window:
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self.thread_strvar.trace('w', self._window_tkvar_changed_callback)
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def write_event_value(self, key=None, value=None):
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def write_event_value(self, key, value):
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"""
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Adds a key & value tuple to the queue that is used by threads to communicate with the window
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@ -8323,12 +8318,11 @@ class Window:
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"""
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if self.thread_queue is None:
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self._create_thread_queue(key)
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print('*** Warning Window.write_event_value - no thread queue found ***')
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return
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if self.thread_queue:
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key = key if key is not None else self.thread_key
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self.thread_queue.put(item=(key, value))
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self.thread_strvar.set('new item')
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self.thread_queue.put(item=(key, value))
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self.thread_strvar.set('new item')
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def _queued_event_read(self):
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@ -12045,7 +12039,7 @@ def StartupTK(my_flex_form):
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my_flex_form.TKroot = root
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my_flex_form._create_thread_queue('initialized queue')
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my_flex_form._create_thread_queue()
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# Make moveable window
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if (my_flex_form.GrabAnywhere is not False and not (
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@ -3434,7 +3434,7 @@ Parameter Descriptions:
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|Type|Name|Meaning|
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|--|--|--|
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| str | default_text | Text initially shown in the input box as a default value(Default value = '') |
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| Any | default_text | Text initially shown in the input box as a default value(Default value = ''). Will automatically be converted to string |
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| (int, int) (width, height) | size | w=characters-wide, h=rows-high |
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| bool | disabled | set disable state for element (Default = False) |
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| char | password_char | Password character if this is a password field (Default value = '') |
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@ -9869,7 +9869,7 @@ Returns True if the window was closed
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Adds a key & value tuple to the queue that is used by threads to communicate with the window
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```
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write_event_value(key=None, value=None)
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write_event_value(key, value)
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```
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Parameter Descriptions:
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@ -7384,6 +7384,13 @@ k element parameter
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* New global variable __tclversion_detailed__ - string with full tkinter version (3 numbers instead of 2)
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* Warning is displayed if tcl version is found to be 8.5.
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## 4.26.0 PySimpleGUI 18-Jul-2020
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* Multi-threaded tkvar initialization location changed so that thread doesn't intialize it now
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* Removed thread key - no longer needed
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* Window.write_event_values - now requires both parms
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* Upgrade button typo
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### Upcoming
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There will always be overlapping work as the ports will never actually be "complete" as there's always something new that can be built. However there's a definition for the base functionality for PySimpleGUI. This is what is being strived for with the current ports that are underway.
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@ -7384,6 +7384,13 @@ k element parameter
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* New global variable __tclversion_detailed__ - string with full tkinter version (3 numbers instead of 2)
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* Warning is displayed if tcl version is found to be 8.5.
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## 4.26.0 PySimpleGUI 18-Jul-2020
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* Multi-threaded tkvar initialization location changed so that thread doesn't intialize it now
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* Removed thread key - no longer needed
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* Window.write_event_values - now requires both parms
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* Upgrade button typo
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### Upcoming
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There will always be overlapping work as the ports will never actually be "complete" as there's always something new that can be built. However there's a definition for the base functionality for PySimpleGUI. This is what is being strived for with the current ports that are underway.
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