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docs: Don't talk about the deprecated libgnome and GNOME-VFS
Instead talk about GIO and change the option parsing example to not initialize libgnome but only GTK. Fixes bug #592233.
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1 changed files with 22 additions and 18 deletions
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@ -70,20 +70,19 @@
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<itemizedlist>
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<listitem>
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<para>
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GNOME applications call <function>gnome_program_init ()</function>
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to parse command-line options and initialize the necessary gnome
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modules. &GStreamer; applications would normally call
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<function>gst_init ()</function> to do the same for GStreamer.
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GNOME applications usually call <function>gtk_init ()</function>
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to parse command-line options and initialize GTK. &GStreamer;
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applications would normally call <function>gst_init ()</function>
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to do the same for GStreamer.
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This would mean that only one of the two can parse command-line
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options. To work around this issue, &GStreamer; can provide a
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GLib <classname>GOptionGroup</classname> which can be passed to
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<function>gnome_program_init ()</function>. The following
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example requires Gnome-2.14 or newer (previous libgnome versions
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do not support command line parsing via GOption yet but use the
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now deprecated popt)
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example requires GTK 2.6 or newer (previous GTK versions
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do not support command line parsing via GOption yet)
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</para>
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<programlisting><!-- example-begin gnome.c a -->
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#include <gnome.h>
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#include <gtk/gtk.h>
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#include <gst/gst.h>
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static gchar **cmd_filenames = NULL;
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@ -110,29 +109,32 @@ gint
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main (gint argc, gchar **argv)
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{
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GOptionContext *context;
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GOptionGroup *gstreamer_group;
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GnomeProgram *program;
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GOptionGroup *gstreamer_group, *gtk_group;
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GError *err = NULL;
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/* we must initialise the threading system before using any
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* other GLib funtion, such as g_option_context_new() */
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if (!g_thread_supported ())
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g_thread_init (NULL);
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context = g_option_context_new ("gnome-demo-app");
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context = g_option_context_new ("gtk-demo-app");
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/* get command line options from GStreamer and add them to the group */
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gstreamer_group = gst_init_get_option_group ();
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g_option_context_add_group (context, gstreamer_group);
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gtk_group = gtk_get_option_group (TRUE);
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g_option_context_add_group (context, gtk_group);
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/* add our own options. If you are using gettext for translation of your
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* strings, use GETTEXT_PACKAGE here instead of NULL */
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g_option_context_add_main_entries (context, cmd_options, NULL);
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program = gnome_program_init ("gnome-demo-app", VERSION
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LIBGNOMEUI_MODULE, argc, argv,
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GNOME_PARAM_HUMAN_READABLE_NAME, "Gnome Demo",
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GNOME_PARAM_GOPTION_CONTEXT, context,
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NULL);
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/* now parse the commandline options, note that this already
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* calls gtk_init() and gst_init() */
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if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
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g_print ("Error initializing: %s\n", err->message);
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exit (1);
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}
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/* any filenames we got passed on the command line? parse them! */
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if (cmd_filenames != NULL) {
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@ -170,8 +172,10 @@ main (gint argc, gchar **argv)
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<listitem>
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<para>
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&GStreamer; provides data input/output elements for use with the
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GNOME-VFS system. These elements are called <quote>gnomevfssrc</quote>
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and <quote>gnomevfssink</quote>.
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GIO VFS system. These elements are called <quote>giosrc</quote>
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and <quote>giosink</quote>.
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The deprecated GNOME-VFS system is supported too but shouldn't be
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used for any new applications.
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</para>
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</listitem>
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</itemizedlist>
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