Shouldn't integer functions return -1 on error.

[Jeff Franks <jcf tpg com au>]

Hi,

I noticed that gconf_client_get_int() returns zero if a key has no value 
set, or the subdirectory doesn't exist. This means the only way to check 
if a key has been previously set, say the first time an application 
runs, is with
gconf_client_dir_exists(). I tried using GError but no error gets 
reported if a value has not been set for a key, or the key doesn't exist 
yet.

Given that zero is a valid value (e.g. when storing enum values) 
wouldn't it be better for functions returning an integer to return -1 on 
error, rather than zero. That way, if you only want to know whether a 
value has been previously set or not, you can check for -1.

Regards,
Jeff Franks.