From a2251aadaa6de54eaf9663451afd16806a0712f3 Mon Sep 17 00:00:00 2001 From: Andrew Svetlov Date: Tue, 13 Mar 2012 18:36:13 -0700 Subject: Issue #989712: Support using Tk without a mainloop. --- Lib/idlelib/run.py | 16 ++++++++++++++++ Misc/NEWS | 2 ++ 2 files changed, 18 insertions(+) diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py index 25338ff..962c6c0 100644 --- a/Lib/idlelib/run.py +++ b/Lib/idlelib/run.py @@ -38,6 +38,21 @@ else: return s warnings.formatwarning = idle_formatwarning_subproc + +def handle_tk_events(): + """Process any tk events that are ready to be dispatched if tkinter + has been imported, a tcl interpreter has been created and tk has been + loaded.""" + tkinter = sys.modules.get('tkinter') + if tkinter and tkinter._default_root: + # tkinter has been imported, an Tcl interpreter was created and + # tk has been loaded. + root = tkinter._default_root + while root.tk.dooneevent(tkinter._tkinter.DONT_WAIT): + # Process pending events. + pass + + # Thread shared globals: Establish a queue between a subthread (which handles # the socket) and the main thread (which runs user code), plus global # completion, exit and interruptable (the main thread) flags: @@ -93,6 +108,7 @@ def main(del_exitfunc=False): try: seq, request = rpc.request_queue.get(block=True, timeout=0.05) except queue.Empty: + handle_tk_events() continue method, args, kwargs = request ret = method(*args, **kwargs) diff --git a/Misc/NEWS b/Misc/NEWS index aee1ad8..9b4d2c2 100644 --- a/Misc/NEWS +++ b/Misc/NEWS @@ -24,6 +24,8 @@ Core and Builtins Library ------- +- Issue #989712: Support using Tk without a mainloop. + - Issue #5219: Prevent event handler cascade in IDLE. - Issue #3835: Refuse to use unthreaded Tcl in threaded Python. -- cgit v0.12