Topic Path: Symbol Reference > Classes > TIdThreadSafeCardinal Class > TIdThreadSafeCardinal Methods > Decrement Method > Decrement Method (Cardinal)
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TIdThreadSafeCardinal.Decrement Method (Cardinal)

Decreases the value for the thread-safe data type.

function Decrement(
    const AValue: Cardinal
): Cardinal; overload;
Parameters 
Description 
AValue 
Amount to decrement the data type. 

Cardinal - Value for the data type after decrementing.

Decrement is an overloaded Cardinal function used to decrease the value of the thread-safe Cardial data type by the amount indicated in AValue. 

Decrement calls Lock to enable the resource protection capabilities of the object instance prior to updating the associated value for the data type. Decrement calls Unlock to disable resource protection when the value is successfully updated, or an exception is raised. 

Use Increment to increase the value of the thread-safe Cardinal data type.

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