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Thank You & Regards Amit Pujar Send gtkmm-list mailing list submissions to [hidden email] To subscribe or unsubscribe via the World Wide Web, visit https://mail.gnome.org/mailman/listinfo/gtkmm-list or, via email, send a message with subject or body 'help' to [hidden email] You can reach the person managing the list at [hidden email] When replying, please edit your Subject line so it is more specific than "Re: Contents of gtkmm-list digest..." Today's Topics: 1. B." [hidden email] To: [hidden email] Subject: Re: Gtkmm GUI fails to update Message-ID: [hidden email] Content-Type: text/plain; charset="utf-8" On Fri, Jan 20, 2017 at PM, [hidden email] wrote: Window A has button called Dialogwindow A which invoked a Dialogwindow and shows . Any dissemination, use, review, distribution, printing or copying of this message in whole or in part is strictly prohibited. Re: EXTERNAL: ANNOUNCE: gtkmm 3.89.3 (John Emmas) ---------------------------------------------------------------------- Message: 1 Date: Fri, 0000 From: "D. If you have received this transmission in error, please notify the sender immediately by return e-mail and permanently delete this message and any attachments from your system.

No Tk code can get into athread, Tk is not thread safe. Don't try to createwidgets in the thread code block.

Instead, use Glib:: Idle-add() in threads to accessthe widgets. Remember, a thread must return, or reach the end of it's code block, for itto be joined.

Finally, Gtk2 has a means of attempting to provide thread safety, meaning youcan access Gtk2 widgets from the thread. There is thethread-add() So here are some rules to follow that will let things work right. This is done by making asleeping thread, and using your gui to wake it up with button presses or callbacks, andshared variables. So create a set of sleepingthreads at the start of your program, and reuse them.

These can beviolated, but you may cause errors, These rules, if followed, will give foolproof threadoperation. Also in Gtk2 programs, use Glib:: Object-set_threadsafe (TRUE); Perl/Tk ( not Perl/Gtk2 ) is very sensitive to this. If they contain objects, clear outthe object data and reuse the objects for the next thread wakeup run. Keep the creation of all gui widgets in the main thread.

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