Variants.VarIsEmpty Function

Indicates whether the specified variant is unassigned.

Pascal

function VarIsEmpty(const V: Variant): Boolean;

C++

Boolean VarIsEmpty(const Variant V);

File

Variants

Description

VarIsEmpty returns true if the given variant contains the value Unassigned. If the variant contains any other value, the function result is false.

Note: VarIsEmpty does not indicate when a System::Variant that represents an interface has had the interface pointer cleared or when a custom System::Variant is clear. If either of these situations may exist, use the VarIsClear method instead.

Note: Do not confuse an unassigned variant with a Null variant. A Null variant is still assigned, but has the value Null. Unlike unassigned variants, Null variants can be used in expressions and can be converted to other types of variants.