[ CCode ( cname = "CLIENT_BACKEND_PROPERTY_OPENING" ) ]
[ Version ( deprecated = true , deprecated_since = "3.8" , since = "3.2" ) ]
public const string CLIENT_BACKEND_PROPERTY_OPENING
Warning: CLIENT_BACKEND_PROPERTY_OPENING is deprecated since 3.8.
The "opening" property is "TRUE" when the client is in the process of opening, "FALSE" at all other times.
Clients don't need to care if they're fully opened anymore.
This property will always return false.