ISCardCmd::put_P1 method

[The put_P1 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 put_P1 method sets the first parameter (P1) byte of the application protocol data unit (APDU).

Syntax

HRESULT put_P1(
  [in] BYTE byP1
);

Parameters

byP1 [in]

The byte that is the P1 field.

Return value

The method returns one of the following possible values.

Remarks

To set the P2 value of the APDU, call get_P2.

To retrieve the existing P1, P2, and P3 values, call get_P1, get_P2 or get_P3 respectively.

For a list of all the methods provided by this interface, see ISCardCmd.

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 how to set the first parameter (P1) byte of the application protocol data unit (APDU). The example assumes that pISCardCmd is a valid pointer to an instance of the ISCardCmd interface.

HRESULT  hr;

// Set the P1 byte.
hr = pISCardCmd->put_P1(0x06);
if (FAILED(hr))
{
  printf("Failed put_P1\n");
  // Take other error handling action as needed.
}

Requirements

See also

get_P1

get_P2

get_P3

ISCardCmd

put_P2