wayland-protocols: Add pointer_stylus_exists error to zcr_stylus_v1 interface.

third_party/wayland-protocols/include/protocol/stylus-unstable-v1-client-protocol.h

 /* Generated by wayland-scanner 1.11.0 */
 
 #ifndef STYLUS_UNSTABLE_V1_CLIENT_PROTOCOL_H
 #define STYLUS_UNSTABLE_V1_CLIENT_PROTOCOL_H
 
 #include <stdint.h>
 #include <stddef.h>
 #include "wayland-client.h"
 
 #ifdef  __cplusplus
@@ skipping 88 matching lines @@
  * See @ref iface_zcr_pointer_stylus_v1.
  */
 /**
  * @defgroup iface_zcr_pointer_stylus_v1 The zcr_pointer_stylus_v1 interface
  *
  * The zcr_pointer_stylus_v1 interface extends the wl_pointer interface with
  * events to describe details about a stylus acting as a pointer.
  */
 extern const struct wl_interface zcr_pointer_stylus_v1_interface;
 
+#ifndef ZCR_STYLUS_V1_ERROR_ENUM
+#define ZCR_STYLUS_V1_ERROR_ENUM
+enum zcr_stylus_v1_error {
+        /**
+         * the pointer already has a pointer_stylus object associated
+         */
+        ZCR_STYLUS_V1_ERROR_POINTER_STYLUS_EXISTS = 0,
+};
+#endif /* ZCR_STYLUS_V1_ERROR_ENUM */
+
 #define ZCR_STYLUS_V1_GET_POINTER_STYLUS        0
 
 /**
  * @ingroup iface_zcr_stylus_v1
  */
 #define ZCR_STYLUS_V1_GET_POINTER_STYLUS_SINCE_VERSION  1
 
 /** @ingroup iface_zcr_stylus_v1 */
 static inline void
 zcr_stylus_v1_set_user_data(struct zcr_stylus_v1 *zcr_stylus_v1, void *user_data)
@@ skipping 18 matching lines @@
 static inline void
 zcr_stylus_v1_destroy(struct zcr_stylus_v1 *zcr_stylus_v1)
 {
         wl_proxy_destroy((struct wl_proxy *) zcr_stylus_v1);
 }
 
 /**
  * @ingroup iface_zcr_stylus_v1
  *
  * Create pointer_stylus object. See zcr_pointer_stylus_v1 interface for
- * details.
+ * details. If the given wl_pointer already has a pointer_stylus object
+ * associated, the pointer_stylus_exists protocol error is raised.
  */
 static inline struct zcr_pointer_stylus_v1 *
 zcr_stylus_v1_get_pointer_stylus(struct zcr_stylus_v1 *zcr_stylus_v1, struct wl_pointer *pointer)
 {
         struct wl_proxy *id;
 
         id = wl_proxy_marshal_constructor((struct wl_proxy *) zcr_stylus_v1,
                          ZCR_STYLUS_V1_GET_POINTER_STYLUS, &zcr_pointer_stylus_v1_interface, NULL, pointer);
 
         return (struct zcr_pointer_stylus_v1 *) id;
@@ skipping 134 matching lines @@
                          ZCR_POINTER_STYLUS_V1_DESTROY);
 
         wl_proxy_destroy((struct wl_proxy *) zcr_pointer_stylus_v1);
 }
 
 #ifdef  __cplusplus
 }
 #endif
 
 #endif