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Add Tkinter threading change 

Fix markup errors
Rewrite a sentence
This commit is contained in:
Andrew M. Kuchling 2002-12-13 12:53:16 +00:00
parent 71fd01c099
commit 6c50df2d90
1 changed files with 17 additions and 3 deletions
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20
Doc/whatsnew/whatsnew23.tex
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@ -1286,7 +1286,7 @@ sometimes have odd bugs. Brett Cannon contributed a portable
implementation that's written in pure Python, which should behave
identically on all platforms.
\item The \module{UserDict) has a new \class{DictMixin} class which
\item The \module{UserDict} module has a new \class{DictMixin} class which
defines all dictionary methods for classes that already have a minimum
mapping interface. This greatly simplifies writing classes that need
to be substitutable for dictionaries, such as the classes in
@ -1294,7 +1294,7 @@ the \module{shelve} module.
Adding the mixin as a superclass provides the full dictionary
interface whenever the class defines \method{__getitem__},
\method{__setitem__}, \method{__delitem__), and \method{keys}.
\method{__setitem__}, \method{__delitem__}, and \method{keys}.
For example:
\begin{verbatim}
@ -1371,6 +1371,20 @@ stamps, or if they use the tuple API. If used, the feature should be
activated on an application level instead of trying to enable it on a
per-use basis.
\item The \module{Tkinter} module now works with a thread-enabled
version of Tcl. Tcl's threading model requires that widgets only be
accessed from the thread in which they're created; accesses from
another thread can cause Tcl to panic. For certain Tcl interfaces,
\module{Tkinter} will now automatically avoid this by marshalling a
command, passing it to the correct thread, and waiting for the results
when a widget is accessed from a different thread. Other interfaces
can't be handled automatically but \module{Tkinter} will now raise an
exception on such an access so that you can at least find out about
the problem. See
\url{http://mail.python.org/pipermail/python-dev/2002-December/031107.html}
for a more detailed explanation of this change. (Implemented by
Martin von L\"owis.)
\item Calling Tcl methods through \module{_tkinter} no longer
returns only strings. Instead, if Tcl returns other objects those
objects are converted to their Python equivalent, if one exists, or
@ -1392,7 +1406,7 @@ import Tkinter
Tkinter.wantobjects = 0
\end{verbatim}
Please report any breakage caused by this change as a bug.
Any breakage caused by this change should be reported as a bug.
\end{itemize}