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SCardReconnect

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This function re-establishes an existing connection between the calling application and a smart card. The function moves a card handle from direct access to general access, or acknowledges and clears an error condition that is preventing further access to the card.

LONG SCardReconnect(
  SCARDHANDLE hCard, 
  DWORD dwShareMode, 
  DWORD dwPreferredProtocols, 
  DWORD dwInitialization, 
  LPDWORD pdwActiveProtocol 
);

Parameters

  • hCard
    [in] Handle to the reference value obtained from a previous call to SCardConnect.
  • dwShareMode
    [in] Specifies a flag that indicates whether other applications can form connections to this card. The following table shows the possible values for dwShareMode.
    Value Description
    SCARD_SHARE_SHARED Unsupported.
    SCARD_SHARE_EXCLUSIVE This application will not share this card with other applications.
  • dwPreferredProtocols
    [in] Supplies a bit mask of acceptable protocols for this connection. The following table shows the possible values, which may be combined with the OR operation, for dwPreferredProtocols.
    Value Description
    SCARD_PROTOCOL_T0 T=0 is an acceptable protocol.
    SCARD_PROTOCOL_T1 T=1 is an acceptable protocol.
  • dwInitialization
    [in] Specifies the kind of initialization to perform on the card. The following table shows the possible values for dwInitialization.
    Value Description
    SCARD_LEAVE_CARD Do not do anything special on reconnect.
    SCARD_RESET_CARD Reset the card (warm reset).
    SCARD_UNPOWER_CARD Power down the card and reset it (cold reset).
  • pdwActiveProtocol
    [out] Pointer that specifies a flag indicating the established active protocol. The following table shows the possible values for pdwActiveProtocol.
    Value Description
    SCARD_PROTOCOL_T0 T=0 is the active protocol.
    SCARD_PROTOCOL_T1 T=1 is the active protocol.

Return Values

The following table shows the possible return values.

Value Description
SCARD_S_SUCCESS Succeeds
An error value (see Smart Card Error Values for a list of all error values). Fails

Remarks

SCardReconnect is a smart card and reader access function.

Requirements

OS Versions: Windows CE 3.0 and later.
Header: Winscard.h.
Link Library: Winscard.lib.

See Also

SCardConnect | SCardDisconnect

 Last updated on Saturday, April 10, 2004

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