Edit

Share via

SCardWriteCacheW function (winscard.h)

  • Article

The SCardWriteCache function writes a name-value pair from a smart card to the global cache maintained by the Smart Card Resource Manager.

Syntax

LONG SCardWriteCacheW(
  [in] SCARDCONTEXT hContext,
  [in] UUID         *CardIdentifier,
  [in] DWORD        FreshnessCounter,
  [in] LPWSTR       LookupName,
  [in] PBYTE        Data,
  [in] DWORD        DataLen
);

Parameters

[in] hContext

A handle that identifies the resource manager context. The resource manager context is set by a previous call to SCardEstablishContext.

[in] CardIdentifier

A pointer to a value that uniquely identifies the smart card from which the name-value pair was read.

[in] FreshnessCounter

The current revision of the cached data.

[in] LookupName

A pointer to a null-terminated string that contains the name portion of the name-value pair to write to the global cache.

[in] Data

A pointer to an array of byte values that contain the value portion of the name-value pair to write to the global cache.

[in] DataLen

The size, in bytes, of the Data buffer.

Return value

If the function succeeds, it returns SCARD_S_SUCCESS.

If the function fails, it returns one of the following error codes. For more information, see Smart Card Return Values.

Return code/value Description
SCARD_W_CACHE_ITEM_TOO_BIG
0x80100072
 The size of the specified name-value pair exceeds the maximum size defined for the global cache.

Remarks

Note

The winscard.h header defines SCardWriteCache as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Target Platform Windows
Header winscard.h
Library Winscard.lib
DLL Winscard.dll

See also

SCardReadCache