internal static extern NetVips.Enums.LogLevelFlags GLogSetFatalMask( [MarshalAs(UnmanagedType.LPStr)] string logDomain, NetVips.Enums.LogLevelFlags fatalMask);
internal static extern NetVips.Enums.LogLevelFlags GLogSetAlwaysFatal(NetVips.Enums.LogLevelFlags fatalMask);
internal static extern uint GLogSetHandler([MarshalAs(UnmanagedType.LPStr)] string logDomain, NetVips.Enums.LogLevelFlags flags, LogFuncNative logFunc, IntPtr userData);
internal static extern void GLogDefaultHandler([MarshalAs(UnmanagedType.LPStr)] string logDomain, NetVips.Enums.LogLevelFlags logLevel, IntPtr message, IntPtr unusedData);
internal static extern void GLogv([MarshalAs(UnmanagedType.LPStr)] string logDomain, NetVips.Enums.LogLevelFlags flags, IntPtr message);