Creates an Item from Blob data. If a Group is open, then graphics are added to the Group, otherwise a new Item is created.
Visual Basic |
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Public Function CreateItemB( _ ByVal blob As Variant, _ ByVal projection As String, _ ByVal fmt As Integer _ ) As Integer |
The format of the stored Item Blob.
SIS_BLOB_SIS_V6_ASCII
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0 = Cadcorp SIS format |
SIS_BLOB_OGIS_WKB | 1 = OGC Well-Known-Binary format |
SIS_BLOB_OGIS_WKT | 2 = OGC Well-Known-Text format |
SIS_BLOB_OGIS_GML | 3 = OGC Geographic Markup Language |
SIS_BLOB_ESRI_SHP | 4 = ESRI Shape (*.shp) |
SIS_BLOB_SIS_BIN_ITEM | 5 = Binary item |
SIS_BLOB_GEOJSON | 6 = Geographic Objects for JSON format |
If a group is open, graphics are added to the group, otherwise a new item is created. When modifying an item which is stored as a Blob in a database, it is good practice to create a temporary version of the item on an editable overlay, and only commit the changes to the database, having got the new Blob string using GetBlob, when the user is satisfied with the changes.
This allows any changes to other columns in the database table to be done in the same transaction.
Available: GEO OM OD
Group:
sis.CreateItemB (blob, "*APrjNatGrid", SIS_BLOB_SIS)
Creates an item on the current overlay using the value of blob
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