[C#]
    event TSBPDFBeforeSignEvent OnBeforeSign;
    delegate void TSBPDFBeforeSignEvent(Object Sender, TElPDFSignature Signature);

[VB.NET]
    Event OnBeforeSign As TSBPDFBeforeSignEvent
    Delegate Sub TSBPDFBeforeSignEvent(ByVal Sender As Object, ByVal Signature As TElPDFSignature)

[Pascal]
    property OnBeforeSign : TSBPDFBeforeSignEvent;
    TSBPDFBeforeSignEvent = procedure(Sender : TObject; Signature : TElPDFSignature) of object;

[C++]
    void get_OnBeforeSign(TSBPDFBeforeSignEvent &pMethodOutResult, void * &pDataOutResult);
    void set_OnBeforeSign(TSBPDFBeforeSignEvent pMethodValue, void * pDataValue);
    typedef void (SB_CALLBACK *TSBPDFBeforeSignEvent)(void * _ObjectData, TObjectHandle Sender, TElPDFSignatureHandle Signature);

[PHP]
    TSBPDFBeforeSignEvent|callable|NULL get_OnBeforeSign()
    void set_OnBeforeSign(TSBPDFBeforeSignEvent|callable|NULL $Value)
    callable TSBPDFBeforeSignEvent(TObject $Sender, TElPDFSignature $Signature)

[Java]
    TSBPDFBeforeSignEvent getOnBeforeSign();
    void setOnBeforeSign(TSBPDFBeforeSignEvent Value);
    TSBPDFBeforeSignEvent.Callback OnBeforeSign = new TSBPDFBeforeSignEvent.Callback() {
        public void TSBPDFBeforeSignEventCallback(TObject Sender, TElPDFSignature Signature) {
            //...
        }
    }