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QueryCompressorInformation function

Queries a compressor for information for a particular compression algorithm.


BOOL QueryCompressorInformation(
  _In_   COMPRESSOR_HANDLE CompressorHandle,
  _In_   COMPRESS_INFORMATION_CLASS CompressInformationClass,
  _Out_  PVOID CompressInformation,
  _In_   SIZE_T CompressInformationSize


CompressorHandle [in]

Handle to the compressor being queried for information.

CompressInformationClass [in]

A value of the COMPRESS_INFORMATION_CLASS enumeration that identifies the type of information.

CompressInformation [out]

Information for the compression algorithm written as bytes. The maximum size in bytes of this information is given by CompressInformationSize.

CompressInformationSize [in]

Maximum size in bytes of the information.

Return value

If the function succeeds, the return value is nonzero. If the function fails, the return value is zero. To get extended error information, call GetLastError.


If the compression algorithm fails for some internal reason, the error from GetLastError can be ERROR_FUNCTION_FAILED. If the system cannot locate the compression algorithm handle, the error can be ERROR_INVALID_HANDLE. If the compression algorithm does not allow the information class, the error can be ERROR_UNSUPPORTED_TYPE. If the buffer is to small to hold the value, the error can be ERROR_INSUFFICIENT_BUFFER.

Windows Phone 8.1: This API is supported.



Compressapi.h on Windows 8 and Windows Server 2012



See also

Compression API Functions



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