Overlay Methods

The following methods offer control over overlays.

Note: Many of the methods in this section use a pos% argument to refer to the position of an overlay in the overlays list. The overlays list is a zero-based list, i.e. the first overlay is at position 0, the second at position 1 etc. This must always be borne in mind when specifying the pos% argument.


CreateBackdropOverlay  
Creates a new overlay that uses a named item as a backdrop.
CreateDataSourceOverlay  
Inserts a dataset into the current SWD, that will fetch data from non-file data source.
CreateDbBlobOverlay  
Creates an overlay that views BLOBs stored in a database.
CreateDbOverlay  
Creates an overlay that stores editable BLOBs in a database.
CreateDbPointOverlay  
Creates an overlay that views Points stored in a database.
CreateFilteredOverlay  
Creates a new filtered copy of an existing overlay.
CreateIndexCoverage  
Creates tile items covering extents, using a standard naming convention.
CreateIndexOverlay  
Creates an index overlay.
CreateInternalOverlay  
Creates an internal overlay.
CreateOpenGisSqlOverlay  
Creates an overlay using an OGC conformant database.
CreatePhaseOverlay  
Creates a new phase of an existing overlay.
DefineRecordset  
Defines a named recordset, for use with databases.
EnsureOpenWithin  
Forces datasets in the current SWD to open any items within the given extents, at the given scale.
ExplodeOverlayTheme  
Explodes an overlay theme into a new overlay.
FindDatasetOverlay  
Finds an overlay that contains the given dataset.
GetOverlayFilter  
Gets a copy of an overlay drawing filter.
GetOverlayLocus  
Gets a copy of an overlay drawing spatial filter.
GetOverlaySchema  
Gets a copy of an overlay schema.
GetOverlayTheme  
Gets a copy of an overlay theme.
GetOverlayThemeLegend  
Gets an overlay theme legend as a BLOB string within a coordinate reference system.
ImportDataset  
Imports a dataset into the current SWD.
InsertDataset  
Inserts a dataset into the current SWD.
InsertOverlayTheme  
Inserts a copy of a named theme into an overlay in the current SWD.
IsOverlayThemeEnabled  
Checks whether an Overlay theme is currently enabled or disabled.
RemoveOverlay  
Removes an overlay from the current SWD, deleting it if it is an internal overlay.
RemoveOverlayTheme  
Removes a theme from an overlay in the current SWD.
ReorderOverlay  
Changes the order of overlays.
SetOverlayDataset Sets the Dataset of an overlay in the current swd.
SetOverlayFilter  
Applies a copy of a named filter to an overlay in the current SWD.
SetOverlayLocus  
Applies a copy of a named spatial filter to an overlay in the current SWD.
SetOverlaySchema  
Applies a copy of a schema to an overlay in the current SWD.

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