From: briot.emmanuel@gmail.com
Subject: Re: Where do I get my Cairo context from (in GTK3)?
Date: Wed, 27 Apr 2016 00:47:00 -0700 (PDT)
Date: 2016-04-27T00:47:00-07:00 [thread overview]
Message-ID: <31e4394b-eb85-4d31-bd25-f2bd332c7c9b@googlegroups.com> (raw)
In-Reply-To: <do8k0uF8ojjU1@mid.individual.net>
> I would use On_* procedures if I didn't need user data. Until now no
> success.
Are you sure you really need that user data ? In my experience, it is often
better to extend the widget type in your application, store whatever information
is needed in that child type, and then use the On_* procedure passing a Slot
object (so that the callback receives your widget type, rather than the widget
on which the action occurred). This works in 95% of the cases.
The GNAT Development Studio (GPS), which is about 500_000 lines of code
has almost no use of user data, and those that remain are mostly because
that part of the code hasn't been updated yet.
next prev parent reply other threads:[~2016-04-27 7:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-24 20:44 Where do I get my Cairo context from (in GTK3)? hreba
2016-04-25 7:40 ` Dmitry A. Kazakov
2016-04-25 10:03 ` hreba
2016-04-25 11:58 ` Dmitry A. Kazakov
2016-04-26 7:22 ` briot.emmanuel
2016-04-26 7:34 ` hreba
2016-04-27 7:47 ` briot.emmanuel [this message]
2016-04-27 8:08 ` Dmitry A. Kazakov
2016-04-28 7:48 ` briot.emmanuel
2016-04-27 13:15 ` hreba
2016-04-27 13:37 ` Dmitry A. Kazakov
2016-04-28 7:49 ` briot.emmanuel
2016-08-05 15:56 ` borisgaertner56
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