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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="scrolledwindow.c" xml:lang="cs">
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<info>
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<title type="text">ScrolledWindow (C)</title>
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<link type="guide" xref="c#scrolling"/>
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<link type="seealso" xref="textview.c"/>
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<link type="seealso" xref="image.c"/>
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<revision version="0.1" date="2012-08-20" status="draft"/>
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<credit type="author copyright">
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<name>Monica Kochofar</name>
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<email its:translate="no">monicakochofar@gmail.com</email>
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<years>2012</years>
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</credit>
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<desc>Přidává posuvníky pro svůj synovský widget</desc>
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</info>
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<title>ScrolledWindow</title>
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<media type="image" mime="image/png" src="media/scrolledwindow.png"/>
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Obrázek v okně s posuvníky.
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#include <gtk/gtk.h>
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static void
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activate (GtkApplication *app,
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gpointer user_data)
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{
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/* Deklarace proměnných */
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GtkWidget *window;
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GtkWidget *scrolled_window;
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GtkWidget *image;
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/* Vytvoří okno s názvem, šířkou okraje a výchozí velikostí */
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window = gtk_application_window_new (app);
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gtk_window_set_title (GTK_WINDOW (window), "ScrolledWindow Example");
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gtk_window_set_default_size (GTK_WINDOW (window), 220, 200);
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/* Vytvoří okno s posuvníky. Obvykle se oboum parametrům předává NULL, takže
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* se vodorovný i svislý posuvník vytvoří automaticky podle potřeby. Nastavení
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* pravidel posuvníků na automatiku umožní, aby se zobrazovaly jen když jsou
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* zapotřebí.
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*/
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scrolled_window = gtk_scrolled_window_new (NULL, NULL);
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/* Nastaví šířku okraje */
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gtk_container_set_border_width (GTK_CONTAINER (scrolled_window), 10);
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/* Získá ze souboru námi požadovaný obrázek */
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image = gtk_image_new_from_file ("gnome-image.png");
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/* A přidá jej do okna s posuvníky */
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gtk_container_add (GTK_CONTAINER (scrolled_window), image);
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/* Nastaví pravidlo pro vodorovný a svislý posuvník na automatiku.
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* Což znamená, že se posuvníky zobrazí, jen když je zapotřebí.
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*/
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_container_add (GTK_CONTAINER (window), scrolled_window);
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gtk_widget_show_all (window);
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}
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int
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main (int argc, char **argv)
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{
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GtkApplication *app;
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int status;
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app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
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g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
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status = g_application_run (G_APPLICATION (app), argc, argv);
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g_object_unref (app);
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return status;
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}
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V této ukázce se používá následující:
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<list>
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<item><link href="http://developer.gnome.org/gtk3/stable/GtkApplication.html">GtkApplication</link> </item>
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<item><link href="http://developer.gnome.org/gtk3/stable/GtkWindow.html">GtkWindow</link> </item>
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<item><link href="http://developer.gnome.org/gtk3/stable/GtkScrolledWindow.html">GtkScrolledWindow</link> </item>
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<item><link href="http://developer.gnome.org/gtk/stable/gtk3-Standard-Enumerations.html#GtkPolicyType">GtkPolicyType</link> </item>
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</list>
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</page>
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