Skip to content

    TCustomVariantType.IsClear

    Is the custom value unassigned ?

    Declaration

    Source position: variants.pp line 206

    public 
function TCustomVariantType.IsClear(const V: tvardata) : Boolean
                                   ;  virtual;

    Description

    IsClear must be overridden to decide whether the custom variant V is equivalent to varClear (unassigned) value. The VarIsClear function calls this method to decide whether a custom variant is unassigned.

    The TCustomVariantType implementation of IsClear always returns False.

    See also

    Name Description
    VarIsClear Check if a variant is clear.