Ar an seachtú lá de mí Eanair, scríobh Jamie Zawinski: That could be done by calling XListExtensions, and checking for an entry for the SECURITY extension. If it exists, we don’t have the problem. If it doesn’t, we’re either an untrusted client, or the server doesn’t have the extension; if we’re particularly energetic, we can check this latter using the “new authorization method” described in the spec, to make a separate, unauthenticated, connection to the X server which will succeed if the Security extension is available. There’s apparently, intentionally, no explicit way of working out directly that an XGetProperty request failed because the X server thinks we’re an untrusted client. Yeah, it refers readers to the Xserver manual page and the -sp option, for a security policy file, which could be changed to allow XGetProperty to work. I expect the OS distributors will do that right about when the US goes metric. -- “Ah come on now Ted, a Volkswagen with a mind of its own, driving all over the place and going mad, if that’s not scary I don’t know what is.”