Lists all WMF tag identifiers.
Values:
| IGMDTAG_ID_WMF_FORMAT | WMF metadata format identifier. |
| IGMDTAG_ID_WMF_FH_KEY | WMF file magic number. |
| IGMDTAG_ID_WMF_FH_HANDLE | Metafile HANDLE number (should always be 0). |
| IGMDTAG_ID_WMF_FH_LEFT | Left coordinate in metafile units. |
| IGMDTAG_ID_WMF_FH_TOP | Top coordinate in metafile units. |
| IGMDTAG_ID_WMF_FH_RIGHT | Right coordinate in metafile units. |
| IGMDTAG_ID_WMF_FH_BOTTOM | Bottom coordinate in metafile units.. |
| IGMDTAG_ID_WMF_FH_INCH | Number of metafile units per inch. |
| IGMDTAG_ID_WMF_FH_RESERVED | Reserved (should always be 0). |
| IGMDTAG_ID_WMF_MH_FILE_TYPE | Type of metafile (1=memory, 2=disk). |
| IGMDTAG_ID_WMF_MH_HEADER_SIZE | Size of header in WORDS (always 9). |
| IGMDTAG_ID_WMF_MH_VERSION | Version of Microsoft Windows used. |
| IGMDTAG_ID_WMF_MH_FILE_SIZE | Total size of the metafile in WORDs. |
| IGMDTAG_ID_WMF_MH_NUM_OBJECTS | Number of objects in the file. |
| IGMDTAG_ID_WMF_MH_MAX_RECORD_SIZE | The size of largest record in WORDs. |
| IGMDTAG_ID_WMF_MH_NO_PARAMETERS | Not Used (always 0). |