User Tools

Site Tools


api:dk11:delphi:gislayervector.tgis_layervector.getfieldex_tgis_uid_string

Table of Contents

TGIS_LayerVector.GetFieldEx method

DK11 for Delphi | GisLayerVector.TGIS_LayerVector.GetFieldEx | Constructors | Fields | Methods | Properties | Events

Get field value for a shape determined by unique identity.

Available also on: .NET | Java | ActiveX.

Syntax

// Delphi
public
  function GetFieldEx(
    const _uid : TGIS_Uid;
    const _name : String
  ) : Variant; virtual;
// C++ Builder
public:
  virtual Variant* GetFieldEx(
    TGIS_Uid* const _uid,
    const UnicodeString _name
  );

Parameters

Name Type Description
_uid TGIS_Uid identity
_name String field name

Result

Type Description
Variant Field value. If field value is Null then function will return Null default value. GetField will return a default value instead.

Remarks

Use this method to get field value for a shape given by unique identity.

When using this operation, never call any function which uses FindFirst..FindNext (any function which iterates through the shapes using it - so never use inside an operation like Locate, PaintScope etc.).

2019/09/27 01:09