[C#]
    event TSBPDFCallbackFunc OnDecryptStream;
    delegate void TSBPDFCallbackFunc(TElPDFObject Obj);

[VB.NET]
    Event OnDecryptStream As TSBPDFCallbackFunc
    Delegate Sub TSBPDFCallbackFunc(ByVal Obj As TElPDFObject)

[Pascal]
    property OnDecryptStream : TSBPDFCallbackFunc;
    TSBPDFCallbackFunc = function( Obj : TElPDFObject) : boolean of object;

[C++]
    void get_OnDecryptStream(TSBPDFCallbackFunc &pMethodOutResult, void * &pDataOutResult);
    void set_OnDecryptStream(TSBPDFCallbackFunc pMethodValue, void * pDataValue);
    typedef void (SB_CALLBACK *TSBPDFCallbackFunc)(void * _ObjectData, TElPDFObjectHandle Obj);

[PHP]
    TSBPDFCallbackFunc|callable|NULL get_OnDecryptStream()
    void set_OnDecryptStream(TSBPDFCallbackFunc|callable|NULL $Value)
    callable TSBPDFCallbackFunc(TElPDFObject $Obj)

[Java]
    TSBPDFCallbackFunc getOnDecryptStream();
    void setOnDecryptStream(TSBPDFCallbackFunc Value);
    TSBPDFCallbackFunc.Callback OnDecryptStream = new TSBPDFCallbackFunc.Callback() {
        public boolean TSBPDFCallbackFuncCallback(TElPDFObject Obj) {
            //...
        }
    }