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Reference for unit 'Variants' (#rtl)

TCustomVariantType.CompareOp

Check result of a comparison between 2 custom variant values

Declaration

Source position: variants.pp line 207

public function TCustomVariantType.CompareOp(

const Left: TVarData;

const Right: TVarData;

const Operation: TVarOp

):Boolean; virtual;

Arguments

`Left`		Left operand
`Right`		Right operand
`Operation`		Compare operation to check

Function result

Result of comparison operarion

Description

CompareOp performs the comparison specified in Operation on left and Right and returns True if the values satisfy the requested operation. The TCustomVariantType implementation of this method raises an 'unsupported' error. Descendent classes must override this method.

Errors

If a descendent does not override this, an 'unsupported' error is raised.