[gnome-bluetooth] wizard: Fix backspace, tab, etc. not working

[Bastien Nocera <hadess src gnome org>]

commit df18e0dc72efee9400044a07a3c67aedae998d7f
Author: Bastien Nocera <hadess hadess net>
Date:   Wed May 18 17:49:34 2011 +0100

    wizard: Fix backspace, tab, etc. not working
    
    In the custom PIN entry. We weren't eating all the events, including
    escape, backspace, etc. instead of just the non-numerical printable
    characters.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=692821

 wizard/main.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/wizard/main.c b/wizard/main.c
index 637c489..e8bb400 100644
--- a/wizard/main.c
+++ b/wizard/main.c
@@ -604,11 +604,16 @@ set_page_search_complete (void)
 gboolean
 entry_custom_event (GtkWidget *entry, GdkEventKey *event)
 {
+	gunichar c;
+
 	if (event->length == 0)
 		return FALSE;
 
-	if ((event->keyval >= GDK_KEY_0 && event->keyval <= GDK_KEY_9) ||
-	    (event->keyval >= GDK_KEY_KP_0 && event->keyval <= GDK_KEY_KP_9))
+	/* Not a printable character? */
+	c = gdk_keyval_to_unicode (event->keyval);
+	if (c == 0 ||
+	    g_unichar_iscntrl (c) ||
+	    g_unichar_isdigit (c))
 		return FALSE;
 
 	return TRUE;