[Python-bugs-list] [ python-Bugs-813453 ] restrictions in _tkinter built with threaded tk undocumented

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Bugs item #813453, was opened at 2003-09-27 11:08
Message generated for change (Settings changed) made by loewis
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Category: Documentation
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Matthias Klose (doko)
>Assigned to: Martin v. Löwis (loewis)
Summary: restrictions in _tkinter built with threaded tk undocumented

Initial Comment:
Basically, raise some comments from the _tkinter.c

module to the library reference:



   If Tcl is threaded, this approach won't work

anymore. The Tcl interpreter is only valid in the

thread that created it, and all Tk activity must happen

in this thread, also. That means that the mainloop must

be invoked in the thread that created the interpreter.

Invoking commands from other threads is possible;

_tkinter will queue an event for the interpreter

thread, which will then execute the command and pass

back the result. If the main thread is not in the

mainloop, and invoking commands causes an exception; if

the main loop is running but not processing events, the

command invocation will block.



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