TiAnalogOutput.OnBeforeChange
TiAnalogOutput
Allows for control over whether the Value property is changed and what value it is set to.
type TOnBeforeChangeDouble = procedure(Sender : TObject; OldValue : Double; var NewValue : Double; var CanChange : Boolean) of object;
property OnBeforeChange : TOnBeforeChange;
Description
Use OnBeforeChange to control whether the Value property can change. The event
passes the OldValue and NewValue for inspection. Set CanChange to TRUE to
allow the Value property to change. You can also modify the value that the Value
property is set to by changing the NewValue property.
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