ISCardCmd::get_P1

The get_P1 method retrieves the first parameter (P1) byte from the APDU.

HRESULT get_P1(
  BYTE *pbyP1  
);

Parameters

pbyP1
[out, retval] Pointer to the P1 byte in the APDU on return.

Return Values

The possible return values are the following:

Value Meaning
S_OK Operation completed successfully.
E_INVALIDARG pbyP1 is invalid.
E_POINTER A bad pointer was passed in pbyP1.
E_OUTOFMEMORY Out of memory.

Remarks

To set the P1 parameter to a new value, call put_P1.

To get the P2 or P3 parameters, call get_P2 and get_P3 respectively.

For a list of all the methods provided by the ISCardCmd 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 information on smart card error codes, see Error Codes.

QuickInfo

  Windows NT: Use version 4.0 SP3 and later.
  Windows: Use Windows 95 OSR2.1.
  Windows CE: Unsupported.
  Header: Declared in scarddat.h.
  Import Library: scarddat.tlb.

See Also

get_P2, get_P3, ISCardCmd, put_P1