Lists all XMP tag identifiers.
| IGMDTAG_ID_XMP_FORMAT | XMP Metadata Format identifier. |
| IGMDTAG_ID_XMP_DESCRIPTION | XMP Schema tree. |
| IGMDTAG_ID_XMP_NAMESPACE | Namespace tree. |
| IGMDTAG_ID_XMP_PREFIX | Namespace prefix value. |
| IGMDTAG_ID_XMP_URI | Namespace URI value. |
| IGMDTAG_ID_XMP_ABOUT | About attribute value. |
| IGMDTAG_ID_XMP_PROPERTIES | Properties tree. |
| IGMDTAG_ID_XMP_PROPERTY | Property tree. |
| IGMDTAG_ID_XMP_PROPERTY_VALUE | Property value. |
| IGMDTAG_ID_XMP_PROPERTY_LANG | Language alternative tree. |
| IGMDTAG_ID_XMP_PROPERTY_QUA | Qualifiers tree. |
| IGMDTAG_ID_XMP_PROPERTY_BAG | Bag of values (unordered array) tree. |
| IGMDTAG_ID_XMP_PROPERTY_ALT | Alternative array of values tree. |
| IGMDTAG_ID_XMP_PROPERTY_SEQ | Sequence of values (ordered array) tree. |
| IGMDTAG_ID_XMP_PROPERTY_STRUCT | Structure tree. |
These identifiers represent structural types of XMP metadata, such as Value, Sequence, Bag, Qualifier, etc. ImageGear does not provide enumerations for particular properties of XMP schemes. For more information about XMP metadata support, see the "Working with XMP Metadata" section of Access Image Metadata.