C# Signature:

[DllImport("winscard.dll", EntryPoint="SCardConnect", CharSet=CharSet.Auto)]

static extern int SCardConnect(

     int hContext,
     [MarshalAs(UnmanagedType.LPTStr)] string szReader,
     UInt32 dwShareMode,
     UInt32 dwPreferredProtocols,
     out int phCard,
     out UInt32 pdwActiveProtocol);

User-Defined Types:

Value of dwShareMode:

SCARD_SHARE_SHARED = 0x00000002 - This application will allow others to share the reader

SCARD_SHARE_EXCLUSIVE = 0x00000001 - This application will NOT allow others to share the reader

SCARD_SHARE_DIRECT = 0x00000003 - Direct control of the reader, even without a card

Value of dwPreferredProtocols

SCARD_PROTOCOL_T0 - Use the T=0 protocol (value = 0x00000001)

SCARD_PROTOCOL_T1 - Use the T=1 protocol (value = 0x00000002)

SCARD_PROTOCOL_RAW - Use with memory type cards (value = 0x00000004)

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

SCARDCONTEXT hContext;

SCARDHANDLE hCard;

DWORD dwActiveProtocol;

LONG rv;

rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &hContext);

rv = SCardConnect(hContext, "Reader X", SCARD_SHARE_SHARED,

    SCARD_PROTOCOL_T0, &hCard, &dwActiveProtocol);

Alternative Managed API:

TODO

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