ISCard::get_Status method

Стаття
01/07/2021

[The get_Status method is available for use in the operating systems specified in the Requirements section. It is not available for use in Windows Server 2003 with Service Pack 1 (SP1) and later, Windows Vista, Windows Server 2008, and subsequent versions of the operating system. The Smart Card Modules provide similar functionality.]

The get_Status method retrieves the current state of the smart card.

Syntax

HRESULT get_Status(
  [out] SCARD_STATES *pStatus
);

Parameters

pStatus [out]: Pointer to the state variable.

Return value

The method returns one of the following possible values.

Return code	Description
S_OK	Operation completed successfully.
E_INVALIDARG	The pStatus parameter is not valid.
E_POINTER	A bad pointer was passed in pStatus.

Remarks

In addition to the COM error codes listed above, this interface may return a smart card error code if a smart card function was called to complete the request. For more information, see Smart Card Return Values.

Examples

The following example shows retrieving the current state of the smart card.

SCARD_STATES    scState;
HRESULT         hr;

// Determine the current state of the smart card.
hr = pISCard->get_Status(&scState);
if (FAILED(hr))
{
   printf("Failed get_Status\n");
   exit(1);  // Or other error handling action.
}
// Use the retrieved value. (This example merely displays it.)
switch (scState)
{
    case ABSENT:
        printf("Absent state\n");
        break;
    case PRESENT:
        printf("Present state\n");
        break;
    case SWALLOWED:
        printf("Swallowed state\n");
        break;
    case POWERED:
        printf("Powered state\n");
        break;
    case NEGOTIABLEMODE:
        printf("Negotiable mode state\n");
        break;
    case SPECIFICMODE:
        printf("Specific mode state\n");
        break;
    default:
        printf("Unexpected state\n");
        break;
}

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
End of client support	Windows XP
End of server support	Windows Server 2003
Header	Scardmgr.h
Type library	Scardmgr.tlb
DLL	Scardssp.dll
IID	IID_ISCard is defined as 1461AAC3-6810-11D0-918F-00AA00C18068

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