api:dk11:delphi:gislayervector.tgis_layervector.mergelayerex_tgis_layervector_tgis_extent_tgis_shapetype_string_tgis_shape_string_boolean_boolean
Table of Contents
TGIS_LayerVector.MergeLayerEx method
DK11 for Delphi | GisLayerVector.TGIS_LayerVector.MergeLayerEx | Constructors | Fields | Methods | Properties | Events
Merges layer with an existing layer.
Syntax
// Delphi public procedure MergeLayerEx( const _layer : TGIS_LayerVector; const _extent : TGIS_Extent; const _type : TGIS_ShapeType; const _scope : String; const _shape : TGIS_Shape; const _de9im : String; const _truncated : Boolean; const _restrict : Boolean ); virtual;
// C++ Builder public: virtual void MergeLayerEx( TGIS_LayerVector* const _layer, TGIS_Extent* const _extent, TGIS_ShapeType* const _type, const UnicodeString _scope, TGIS_Shape* const _shape, const UnicodeString _de9im, const bool _truncated, const bool _restrict );
Parameters
| Name | Type | Description |
|---|---|---|
| _layer | TGIS_LayerVector | layer to be imported |
| _extent | TGIS_Extent | starting extent of layer - can't be zero sized |
| _type | TGIS_ShapeType | shape type supported by a layer; if gistypeUnknown is used then import will try to recognize shape on its own; |
| _scope | String | SQL query for which shape will be imported |
| _shape | TGIS_Shape | if not nil, then only shapes matched _de9im matrix with _shape will be found |
| _de9im | String | DE-9IM matrix of comparison |
| _truncated | Boolean | if True, then all shapes will be truncated in _extent; if False, only the shape visible in _extent will be imported ; |
| _restrict | Boolean | if True, any field structure modification will raise error, otherwise allow to resize fields |
Remarks
Remember to assign 'path' property to layer you want to import from for proper import a new layer to file.
Use this method to merge layers. Before the merge SaveData will be fired.
2022/11/16 01:22