System.Variants.VarIsEmptyParam

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Delphi

function VarIsEmptyParam(const V: Variant): Boolean;

C++

extern DELPHI_PACKAGE bool __fastcall VarIsEmptyParam(const System::Variant &V);

Properties

Type	Visibility	Source	Unit	Parent
function	public	System.Variants.pas System.Variants.hpp	System.Variants	System.Variants

Description

Indicates whether the specified variant represents an unassigned optional parameter.

VarIsEmptyParam returns true if the given variant represents an unassigned optional parameter. If the variant contains any other value, the function result is false.

See Also

• VarIsClear

• VarIsEmpty

• VarIsNull

• EmptyParam

• VarIsType

• Variant Support Routines