Implementing IWICBitmapCodecProgressNotification (Encoder)
IWICBitmapCodecProgressNotification
Although the IWICBitmapCodecProgressNotification interface is optional, it is recommended that it be implemented on the container-level encoder class. This interface is discussed in more details in Implementing IWICBitmapCodecProgressNotification (Decoder). The implementation is the same for either the decoder and the encoder.
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Conceptual