TwclIrDAReceiver.OnChange Property
The event fires when the state of the IrDA hardware is
changed. To check real status an application should read the
Available property.
published property OnChange: TNotifyEvent read FOnChange write FOnChange;
Property Value
Type: TNotifyEvent
As there can be more than one IrDA adapter connected to PC
removing (or pluggin) any of them will fire the event. An application
must use Available property to check if the IrDA subsystem
is available or not (if there is at least one IrDA adapter
connected).