Types of errors that can cause navigation to fail. 
| Enumerator | 
|---|
| wxWEBVIEW_NAV_ERR_CONNECTION  | 
 Connection error (timeout, etc.)  
 | 
| wxWEBVIEW_NAV_ERR_CERTIFICATE  | 
 Invalid certificate.  
 | 
| wxWEBVIEW_NAV_ERR_AUTH  | 
 Authentication required.  
 | 
| wxWEBVIEW_NAV_ERR_SECURITY  | 
 Other security error.  
 | 
| wxWEBVIEW_NAV_ERR_NOT_FOUND  | 
 Requested resource not found.  
 | 
| wxWEBVIEW_NAV_ERR_REQUEST  | 
 Invalid request/parameters (e.g.  
bad URL, bad protocol, unsupported resource type)  
 | 
| wxWEBVIEW_NAV_ERR_USER_CANCELLED  | 
 The user cancelled (e.g.  
in a dialog)  
 | 
| wxWEBVIEW_NAV_ERR_OTHER  | 
 Another (exotic) type of error that didn't fit in other categories.  
 |