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Ancestor for compression and decompression classes
Source position: zstream.pp line 43
type Tcustomzlibstream = class(TOwnerStream)  | 
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public  | 
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constructor create();  | 
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Create a new instance of TCustomZlibStream  | 
destructor destroy; override;  | 
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Clear up instance  | 
end;  | 
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Ancestor for compression and decompression classes  | 
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TCustomZlibStream serves as the ancestor class for the TCompressionStream and TDeCompressionStream classes.
It introduces support for a progress handler, and stores the input or output stream.