The get_ApduLength method determines the length (in bytes) of the APDU.
HRESULT get_ApduLength(
LONG *plSize
);
The possible return values are the following:
| Value | Meaning |
|---|---|
| S_OK | Operation completed successfully. |
| E_INVALIDARG | plSize is invalid. |
| E_POINTER | A bad pointer was passed in plSize. |
| E_OUTOFMEMORY | Out of memory. |
To retrieve the raw APDU from the byte buffer mapped through an IStream that contains the APDU message, call get_Apdu.
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.
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.