System.Variant.IsNull

• Up to Parent: Variant

C++

bool  __fastcall IsNull()   const;

Properties

Type	Visibility	Source	Unit	Parent
function	public	sysvari.h	System	Variant

Description

Queries the VType of the base class TVarData for the varNull bit.

IsNull returns True if the VType field of the TVarData base class is varEmpty. IsNull returns False otherwise.

See Also

• TVarData