| Value | Meaning |
|---|---|
| InvalidTypeFunction0 | A type-func attribute didn’t name a function that returns a #GType. |
| UnhandledTag1 | The input contained a tag that #GtkBuilder can’t handle. |
| MissingAttribute2 | An attribute that is required by #GtkBuilder was missing. |
| InvalidAttribute3 | #GtkBuilder found an attribute that it doesn’t understand. |
| InvalidTag4 | #GtkBuilder found a tag that it doesn’t understand. |
| MissingPropertyValue5 | A required property value was missing. |
| InvalidValue6 | #GtkBuilder couldn’t parse some attribute value. |
| VersionMismatch7 | The input file requires a newer version of GTK+. |
| DuplicateId8 | An object id occurred twice. |
| ObjectTypeRefused9 | A specified object type is of the same type or derived from the type of the composite class being extended with builder XML. |
| TemplateMismatch10 | The wrong type was specified in a composite class’s template XML |
| InvalidProperty11 | The specified property is unknown for the object class. |
| InvalidSignal12 | The specified signal is unknown for the object class. |
| InvalidId13 | An object id is unknown |
Error codes that identify various errors that can occur while using #GtkBuilder.