<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="topic" id="tech-gdk" lang="el">

  <info>
    <link type="guide" xref="tech" group="gdk"/>
    <revision pkgversion="3.0" date="2011-04-05" status="candidate"/>

    <credit type="author copyright">
      <name>Shaun McCance</name>
      <email its:translate="no">shaunm@gnome.org</email>
      <years>2011–2012</years>
    </credit>

    <license xmlns="http://projectmallard.org/1.0/" href="http://creativecommons.org/licenses/by-sa/3.0/us/">
<p>This work is licensed under a
<link href="http://creativecommons.org/licenses/by-sa/3.0/us/">Creative Commons
Attribution-Share Alike 3.0 United States License</link>.</p>
<p>Ως ειδική εξαίρεση, οι πνευματικοί ιδιοκτήτες σας επιτρέπουν να αντιγράψετε, να τροποποιήσετε και να αναδιανείμετε τα παραδείγματα πηγαίου κώδικα που περιλαμβάνονται σ' αυτό το έγγραφο υπό τους όρους της επιλογής σας, χωρίς περιορισμό.</p>
</license>

    <desc>Χαμηλού επιπέδου αφαίρεση για το σύστημα παραθύρων</desc>
  <credit type="translator copyright"><name>Ελληνική μεταφραστική ομάδα GNOME</name><email>team@gnome.gr</email><years>2010-2014</years></credit><credit type="translator copyright"><name>Δημήτρης Σπίγγος</name><email>dmtrs32@gmail.com</email><years>2012-2014</years></credit><credit type="translator copyright"><name>Τζένη Πετούμενου</name><email>epetoumenou@gmail.com</email><years>2010</years></credit><credit type="translator copyright"><name>Μάριος Ζηντίλης</name><email>m.zindilis@dmajor.org</email><years>2010</years></credit><credit type="translator copyright"><name>Μαρία Θουκυδίδου</name><email>marablack3@gmail.com</email><years>2014</years></credit><credit type="translator copyright"><name>Θάνος Τρυφωνίδης</name><email>tomtryf@gnome.org</email><years>2014</years></credit></info>

<title>GDK</title>

  <p>GDK is the low-level library used by <link xref="tech-gtk">GTK</link> to
  interact with the windowing system for graphics and input devices. Although
  you will rarely use GDK directly in application code, it contains all the
  necessary functionality to create low-level windows in the screen and to
  interact with the user with various input devices. GDK acts as an abstraction
  over various windowing systems, so that GTK can be portable to all of them:
  the X Window System (X11), Microsoft Windows, Mac OS X Quartz.</p>

<p>GDK enables you to access events from keyboards, mice, and other
input devices.  Implementations of widgets in GTK use this functionality, and
translate the events into higher-level signals that can in turn be used from
application code.  For example, a <code>GtkButton</code> widget will track
<code>GDK_BUTTON_PRESS</code> and <code>GDK_BUTTON_RELEASE</code> events,
which come from the mouse, and translate them as appropriate into a
<code>GtkButton::clicked</code> signal when the user presses and releases
the button in the right location.</p>

<p>Η GDK σας παρέχει χαμηλού επιπέδου ρουτίνες για πρόσβαση σε μεταφορά και απόθεση και δεδομένα προχείρου από το σύστημα. Όταν υλοποιείτε προσαρμοσμένα στοιχεία ελέγχου, μπορείτε να χρειαστείτε να προσπελάσετε αυτά τα γνωρίσματα για κατάλληλη υλοποίηση της συμπεριφοράς αλληλεπίδρασης χρήστη.</p>

<p>GDK provides other functionality which is needed to implement
a complete graphical toolkit like GTK.  Since GDK acts as a platform
abstraction, allowing GTK to run under multiple environments, it
provides an API for all of the system functionality needed by GTK.
This includes information about multi-head displays, resolution and
color depth, colormaps, and cursors.</p>

  <p>You should use GDK whenever you need low-level access to the underlying
  windowing system, including low-level access to events, windows, and the
  clipboard. Using GDK for these tasks ensures that your code is portable and
  integrates with the rest of your GTK code. The simple drawing routines in
  GDK should generally not be used; these are a left-over from when GDK simply
  wrapped the windowing system's drawing primitives. Instead, you should use
  the extensive functionality provided by <link xref="tech-cairo">Cairo</link>
  to draw high-quality 2D graphics.</p>

<list style="compact">
  <item><p><link href="https://developer.gnome.org/gdk3/stable/">Εγχειρίδιο αναφοράς του GDK</link></p></item>
</list>
</page>
