[eog] Replace gdk_spawn_command_line_on_screen() with g_app_info_launch()

[Claudio Saavedra <csaavedra src gnome org>]

commit ec6c2435c16a003f252afbe318b3c656d5e9de0b
Author: Claudio Saavedra <csaavedra igalia com>
Date:   Thu Dec 23 00:13:09 2010 +0200

    Replace gdk_spawn_command_line_on_screen() with g_app_info_launch()
    
    This fixes the build with gtk 2.91.7

 configure.ac     |    2 +-
 src/eog-window.c |   38 ++++++++++++++++++++++++++++++++------
 2 files changed, 33 insertions(+), 7 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 094d52c..fbacee6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -83,7 +83,7 @@ GNOME_DOC_INIT
 # GNOME Libs
 # **********
 
-GTK_REQUIRED=2.91.1
+GTK_REQUIRED=2.91.7
 GLIB_REQUIRED=2.25.15
 GNOME_DESKTOP_REQUIRED=2.91.2
 GDKPIXBUF_REQUIRED=2.4.0
diff --git a/src/eog-window.c b/src/eog-window.c
index 1eb9e3c..1d10099 100644
--- a/src/eog-window.c
+++ b/src/eog-window.c
@@ -2641,13 +2641,39 @@ static void
 wallpaper_info_bar_response (GtkInfoBar *bar, gint response, EogWindow *window)
 {
 	if (response == GTK_RESPONSE_YES) {
-		GdkScreen *screen;
+		GAppInfo *app_info;
+		GError *error = NULL;
+
+		app_info = g_app_info_create_from_commandline ("gnome-appearance-properties --show-page=background",
+							       "gnome-appearance-properties",
+							       G_APP_INFO_CREATE_NONE,
+							       &error);
+
+		if (error != NULL) {
+			g_warning ("%s%s", _("Error launching appearance preferences dialog: "),
+				   error->message);
+			g_error_free (error);
+			error = NULL;
+		}
+
+		if (app_info != NULL) {
+			GdkScreen *screen;
+			GdkAppLaunchContext *context;
 
-		screen = gtk_widget_get_screen (GTK_WIDGET (window));
-		gdk_spawn_command_line_on_screen (screen,
-						  "gnome-appearance-properties"
-						  " --show-page=background",
-						  NULL);
+			screen = gtk_widget_get_screen (GTK_WIDGET (window));
+			context = gdk_display_get_app_launch_context (gdk_screen_get_display (screen));
+			g_app_info_launch (app_info, NULL, G_APP_LAUNCH_CONTEXT (context), &error);
+
+			if (error != NULL) {
+				g_warning ("%s%s", _("Error launching appearance preferences dialog: "),
+					   error->message);
+				g_error_free (error);
+				error = NULL;
+			}
+
+			g_object_unref (context);
+			g_object_unref (app_info);
+		}
 	}
 
 	/* Close message area on every response */