(Unicode C) PC/SC List Smart Card Readers (and USB Tokens)

See more SCard Examples

Demonstrates how to list the smart card readers and USB tokens connected to the computer.

Note: This functionality was introduced in Chilkat v9.5.0.87.

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#include <C_CkSCardW.h>
#include <C_CkStringTableW.h>

void ChilkatSample(void)
    {
    HCkSCardW scard;
    BOOL success;
    HCkStringTableW stReaders;
    int numReaders;
    int i;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    scard = CkSCardW_Create();

    // First establish a context to the PC/SC Resource Manager
    success = CkSCardW_EstablishContext(scard,L"user");
    if (success == FALSE) {
        wprintf(L"%s\n",CkSCardW_lastErrorText(scard));
        CkSCardW_Dispose(scard);
        return;
    }

    stReaders = CkStringTableW_Create();
    success = CkSCardW_ListReaders(scard,stReaders);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSCardW_lastErrorText(scard));
        CkSCardW_Dispose(scard);
        CkStringTableW_Dispose(stReaders);
        return;
    }

    numReaders = CkStringTableW_getCount(stReaders);
    i = 0;
    while (i < numReaders) {
        wprintf(L"%d: %s\n",i,CkStringTableW_stringAt(stReaders,i));
        i = i + 1;
    }

    // Sample output:
    // 0: Alcor Micro USB Smart Card Reader 0
    // 1: FS USB Token 0
    // 2: FT Java Token 0
    // 3: SCM Microsystems Inc. SCR33x USB Smart Card Reader 0
    // 4: Yubico YubiKey OTP+FIDO+CCID 0

    // Applications should always release the context when finished.
    success = CkSCardW_ReleaseContext(scard);
    if (success == FALSE) {
        wprintf(L"%s\n",CkSCardW_lastErrorText(scard));
    }



    CkSCardW_Dispose(scard);
    CkStringTableW_Dispose(stReaders);

    }