MFC中获取智能卡ATR

您可以使用WinSCard API来获取智能卡的ATR。在MFC中，您可以使用以下代码：

#include <winscard.h>

// ...

SCARDCONTEXT hContext;
DWORD dwActiveProtocol;
SCARDHANDLE hCard;
BYTE pbAtr[MAX_ATR_SIZE];
DWORD dwAtrLen = MAX_ATR_SIZE;

// Connect to the smart card
LONG rv = SCardEstablishContext(SCARD_SCOPE_USER, NULL, NULL, &hContext);
if (rv != SCARD_S_SUCCESS)
{
    // Failed to establish context
    // ...
}

rv = SCardConnect(hContext, _T("Your Card Reader"), SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, &hCard, &dwActiveProtocol);
if (rv != SCARD_S_SUCCESS)
{
    // Failed to connect to the card
    // ...
}

// Get the ATR
rv = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, pbAtr, &dwAtrLen);
if (rv != SCARD_S_SUCCESS)
{
    // Failed to get ATR
    // ...
}

// Clean up
SCardDisconnect(hCard, SCARD_LEAVE_CARD);
SCardReleaseContext(hContext);

请替换代码中的“Your Card Reader”为您的智能卡读卡器名称。注意，您需要在代码中包含winscard.h头文件并将Winscard.lib链接到您的项目中。