[vala] xcb: Add binding for xcb_connection_has_error

[Robert Ancell <rancell src gnome org>]

commit 9bd520ede27e47225d562bc377b6eefd39b6df7c
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed May 14 09:39:34 2014 +1200

    xcb: Add binding for xcb_connection_has_error
    
    https://bugzilla.gnome.org/show_bug.cgi?id=730088

 vapi/xcb.vapi |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)
---
diff --git a/vapi/xcb.vapi b/vapi/xcb.vapi
index 294991e..d15e11b 100644
--- a/vapi/xcb.vapi
+++ b/vapi/xcb.vapi
@@ -29,6 +29,8 @@ namespace Xcb {
        public class Connection {
                [CCode (cname = "xcb_connect")]
                public Connection (string? display = null, out int screen = null);
+               [CCode (cname = "xcb_connection_has_error")]
+               public int has_error ();
 
                public void flush ();
                public uint32 generate_id ();
@@ -116,7 +118,19 @@ namespace Xcb {
                public GetGeometryCookie get_geometry_unchecked(Drawable drawable);
                public GetGeometryReply ? get_geometry_reply(GetGeometryCookie cookie, out GenericError ? e);
        }
- 
+
+       [CCode (cprefix = "XCB_CONN_", cname = "int", has_type_id = false)]
+       public enum ConnectionError
+       {
+               ERROR,
+               CLOSED_EXT_NOTSUPPORTED,
+               CLOSED_MEM_INSUFFICIENT,
+               CLOSED_REQ_LEN_EXCEED,
+               CLOSED_PARSE_ERR,
+               CLOSED_INVALID_SCREEN,
+               CLOSED_FDPASSING_FAILED,
+       }
+
        [SimpleType]
        [IntegerType (rank = 9)]
        [CCode (cname = "xcb_get_geometry_cookie_t", has_type_id = false)]