[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'Variants' (#rtl)

TCustomVariantType.Cast

Cast a custom variant to another type

Declaration

Source position: variants.pp line 200

public procedure TCustomVariantType.Cast(

  var Dest: tvardata;

  const Source: tvardata

); virtual;

Arguments

Dest

  

Custom variant to copy value to

Source

  

Variant to copy value from

Description

Cast is called when a variant value Source is cast to a custom variant Dest. Descendents must override this method to provide the desired conversion behaviour.

The TCustomVariantType implementation of Cast calls CastTo on the source variant with as destination type the custom variant type.

Errors

If the variant type cannot be cast, an exception is raised.

See also

TCustomVariantType.CastTo

  

Cast a custom variant to another type

TCustomVariantType.CastToOle

  

Cast variant value to OLE value


Documentation generated on: May 14 2021