| Delphi | C#.NET | Supported |
| Fields | ||
| SPAIndexMask | No | |
| SPASecShift | No | |
| Methods | ||
| InvalidOp | No | |
| GridRect | No | |
| PointInGridRect | No | |
| XorRects | No | |
| ModifyExtents | No | |
| UpdateExtents | No | |
| MoveExtent | No | |
| CompareExtents | No | |
| KillMessage | No | |
| NewStrItem | No | |
| DisposeStrItem | No | |
| ExpandDir | No | |
| ClearItem | No | |
| FreeItem | No | |