These are all the possible values for the IG_ISIS_TAG_BAR_TYPE and IG_ISIS_TAG_BARDATA_TYPE tags.
| IG_ISIS_BAR_TYPE_NONE | No bar code. |
| IG_ISIS_BAR_TYPE_EAN8 | Type EAN-8. |
| IG_ISIS_BAR_TYPE_EAN13 | Type EAN-13 . |
| IG_ISIS_BAR_TYPE_CODE39 | Type CODE 39. |
| IG_ISIS_BAR_TYPE_CODE25_INTERLEAVED | CODE 2/5 interleaved. |
| IG_ISIS_BAR_TYPE_CODE25_MATRIX | CODE 2/5 3 lines (matrix). |
| IG_ISIS_BAR_TYPE_CODE25_DATALOGIC | CODE 2/5 3 lines (datalogic). |
| IG_ISIS_BAR_TYPE_CODE25_INDUSTRIAL | CODE 2/5 5 lines (industrial). |
| IG_ISIS_BAR_TYPE_PATCHCODE | Patch Code type II, III, or T. |
| IG_ISIS_BAR_TYPE_PATCH_II | Patch Code type II. |
| IG_ISIS_BAR_TYPE_PATCH_III | Patch Code type III. |
| IG_ISIS_BAR_TYPE_PATCH_TRANSFER | Transfer Patch Code. |
| IG_ISIS_BAR_TYPE_CODABAR | Codabar bar code. |
| IG_ISIS_BAR_TYPE_UPC_E | UPC code rev E. |
| IG_ISIS_BAR_TYPE_CODE93 | Type CODE 93. |
| IG_ISIS_BAR_TYPE_128 | Type 128. |
| IG_ISIS_BAR_TYPE_POSTNET | Postnet. |
| IG_ISIS_BAR_TYPE_CODE25_AIRLINE | CODE 2/5 (airline). |
| IG_ISIS_BAR_TYPE_UPC_A | UPC code rev A. |
| IG_ISIS_BAR_TYPE_MICR_E13B | Check MICR E13B type. |
| IG_ISIS_BAR_TYPE_MICR_CMC7 | Check MICR CMC7 type. |
| IG_ISIS_BAR_TYPE_ADDON2 | ADDON2. |
| IG_ISIS_BAR_TYPE_ADDON5 | ADDON5. |
| IG_ISIS_BAR_TYPE_AUTO | Auto detect. |
| IG_ISIS_BAR_TYPE_PATCH_I | Patch Code type I. |
| IG_ISIS_BAR_TYPE_PATCH_IV | Patch Code type IV. |
| IG_ISIS_BAR_TYPE_PATCH_VI | Patch Code type VI. |
| IG_ISIS_BAR_TYPE_CODABAR_START_STOP | Codabar including Start/Stop. |
| IG_ISIS_BAR_TYPE_CODE39_ASCII | Type CODE 39 with full ASCII. |
| IG_ISIS_BAR_TYPE_CODE25_IATA | CODE 2/5 5 lines IATA. |
| IG_ISIS_BAR_TYPE_MSI | MSI. |
| IG_ISIS_BAR_TYPE_PDF417 | PDF 417 (2D barcodes). |
| IG_ISIS_BAR_TYPE_UCC128 | UCC 128. |
| IG_ISIS_BAR_TYPE_CODE25 | CODE 2/5 Generic. |
| IG_ISIS_BAR_TYPE_CODE25_INVERT | CODE 2/5 Invert. |
| IG_ISIS_BAR_TYPE_BCDMATRIX | BCD / Matrix. |
| IG_ISIS_BAR_TYPE_CODE32 | BCD / Matrix. |
| IG_ISIS_BAR_TYPE_AZTEC | Aztec. |
| IG_ISIS_BAR_TYPE_DATAMATRIX | Datamatrix. |
| IG_ISIS_BAR_TYPE_MAXICODE | Maxicode. |
| IG_ISIS_BAR_TYPE_QRCODE | QR Code. |