[C#]
    event TSBASiCXAdESSignatureEvent OnBeforeXAdESSign;
    delegate void TSBASiCXAdESSignatureEvent(Object Sender, TElXMLSigner Signer, TElXAdESSigner XAdESSigner);

[VB.NET]
    Event OnBeforeXAdESSign As TSBASiCXAdESSignatureEvent
    Delegate Sub TSBASiCXAdESSignatureEvent(ByVal Sender As Object, ByVal Signer As TElXMLSigner, ByVal XAdESSigner As TElXAdESSigner)

[Pascal]
    property OnBeforeXAdESSign : TSBASiCXAdESSignatureEvent;
    TSBASiCXAdESSignatureEvent = procedure(Sender : TObject; Signer : TElXMLSigner; XAdESSigner : TElXAdESSigner) of object;

[C++]
    not available

[PHP]
    TSBASiCXAdESSignatureEvent|callable|NULL get_OnBeforeXAdESSign()
    void set_OnBeforeXAdESSign(TSBASiCXAdESSignatureEvent|callable|NULL $Value)
    callable TSBASiCXAdESSignatureEvent(TObject $Sender, TElXMLSigner $Signer, TElXAdESSigner $XAdESSigner)

[Java]
    TSBASiCXAdESSignatureEvent getOnBeforeXAdESSign();
    void setOnBeforeXAdESSign(TSBASiCXAdESSignatureEvent Value);
    TSBASiCXAdESSignatureEvent.Callback OnBeforeXAdESSign = new TSBASiCXAdESSignatureEvent.Callback() {
        public void TSBASiCXAdESSignatureEventCallback(TObject Sender, TElXMLSigner Signer, TElXAdESSigner XAdESSigner) {
            //...
        }
    }