From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on ip-172-31-74-118.ec2.internal X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.6 Path: eternal-september.org!reader02.eternal-september.org!aioe.org!Hx95GBhnJb0Xc8StPhH8AA.user.46.165.242.91.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: GtkAda and timeout Date: Thu, 16 Sep 2021 15:05:33 +0200 Organization: Aioe.org NNTP Server Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: gioia.aioe.org; logging-data="18081"; posting-host="Hx95GBhnJb0Xc8StPhH8AA.user.gioia.aioe.org"; mail-complaints-to="abuse@aioe.org"; User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.9.2 Xref: reader02.eternal-september.org comp.lang.ada:62754 List-Id: On 2021-09-16 13:18, AdaMagica wrote: > Example: a ticket automaton > > When a ticket is selected (button press), the user has to insert coins (button press). If no coins are inserted within a certain time, the ticket selection is aborted. > > Thus, I need a timeout that starts each time a button is pressed. > > I'm struggling with the GtkAda RM and UG - no help. Also testgtk is no real help. GTK is synchronous, there is no timeouts. You have two options: 1. An Ada task using a delay statement and then triggering GTK action. 2. A timer queued to the GTK loop. Note that GTK is not multitasking, if you choose #1 you will need to marshal actions to the GTK loop (the task running it). See the GtkAda contributions how to use tasks with GTK. For the option #2 see GLib.Main, the function Timeout_Add and generic package Generic_Sources queue a timer. When timer triggers you do your stuff and then remove the timer. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de