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    TCustomVariantType.Clear

    Clear a value.

    Declaration

    Source position: variants.pp line 210

    public 
procedure TCustomVariantType.Clear(var V: tvardata);  virtual;  abstract;

    Description

    Clear is called when a variant value must be cleared, by VarClear. This is an abstract method that must be overridden and implemented in descendent classes. When the method returns, the type of the variant record must be varClear

    If the custom variant value used some heap memory (for intance in an object) then this is the place to release that memory.

    Errors

    If this method is not overridden, an abstract error will be thrown.

    See also

    Name Description
    TCustomVariantType.IsClear Is the custom value unassigned ?
    TCustomVariantType.Copy Copy a custom variant value.
    VarClear Clear the variant value.