VNC.RFBDrawing.UpdateDecoders.Decoder.Decoder Function
constructs a decoder

Protected void Decoder ()
  Return Description  
    void    
Remarks:
before the Decoder is usable, the stream the data should be read from and the pixelDecoder which should be used to decode read pixel Data must be set. Additionally the surface and the PixelDecoder must be set. This is done using the initalize method. Normally this is done by the surface