COMPR_Uncompress

CryptoSys API Library Manual

COMPR_Uncompress

Uncompress data using compression algorithm.

VBA/VB6 Syntax


Public Declare Function COMPR_Uncompress Lib "diCryptoSys.dll" (ByRef lpOutput As Byte, ByVal nOutBytes As Long, ByRef lpInput As Byte, ByVal nInputLen As Long, ByVal nOptions As Long) As Long

nRet = COMPR_Uncompress(lpOutput(0), nOutputLen, lpInput(0), nInputLen, nOptions)

C/C++ Syntax


long __stdcall COMPR_Uncompress(unsigned char *lpOutput, long nOutBytes, const unsigned char *lpInput, long nInputLen, long nOptions);

Parameters

lpOutput: [out] byte buffer to receive output data.
nOutBytes: [in] size of the output buffer in bytes.
lpInput: [in] input data to be uncompressed.
nInputLen: [in] length of input array in bytes.
nOptions: [in] option flags. Select one of:
API_COMPR_ZLIB (0) to use the zlib algorithm (default)
API_COMPR_ZSTD to use the Zstandard algorithm

Returns (VBA/C)

The number of bytes successfully copied into the output buffer or the required size in bytes. If an error occurs, it returns a negative error code.

VBA Wrapper Syntax


Public Function comprUncompress(lpInput() As Byte, Optional nOptions As Long = 0) As Byte()

.NET Equivalent

Compr.Uncompress Method

Python Equivalent

static Compr.uncompress(data, alg=Alg.ZLIB)

Remarks

To determine the required size of the output buffer, call the function with nOutBytes set to zero (or lpOutput set to NULL).

VB6/VBA users: Note the '(0)' in lpOutput(0) and abInput(0).

Example (VBA core function)

See COMPR_Compress.

Example (VBA wrapper function)

See COMPR_Compress.

COMPR_Uncompress

VBA/VB6 Syntax

C/C++ Syntax

Parameters

Returns (VBA/C)

VBA Wrapper Syntax

.NET Equivalent

Python Equivalent

Remarks

Example (VBA core function)

Example (VBA wrapper function)

See Also