ISCard::ReAttach method

Article
01/07/2021

[The ReAttach 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 ReAttach method resets, or reinitializes, the smart card.

Syntax

HRESULT ReAttach(
  [in] SCARD_SHARE_MODES  ShareMode,
  [in] SCARD_DISPOSITIONS InitState
);

Parameters

ShareMode [in]

Mode in which to share or exclusively own the connection to the smart card.

Value	Meaning
EXCLUSIVE	No one else use this connection to the smart card.
SHARED	Other applications can use this connection.

InitState [in]

Indicates what to do with the card.

Value	Meaning
LEAVE	Leaves the smart card in the current state.
RESET	Resets the smart card to some known state.
UNPOWER	Removes power from the smart card.
EJECT	Ejects the smart card if the reader has eject capabilities.

Return value

The method returns one of the following possible values.

Return code	Description
S_OK	Operation completed successfully.
E_INVALIDARG	There is something wrong with one or more of the parameters passed into the function.

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 reinitializing the smart card.

HRESULT    hr;

// Reattach the smart card.
hr = pISCard->ReAttach(SHARED, LEAVE);
if (FAILED(hr))
{
   printf("Failed ReAttach\n");
   // Take error handling action as needed.
}

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