ISCard::LockSCard method
[The LockSCard 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 LockSCard method claims exclusive access to the smart card.
Syntax
HRESULT LockSCard();
Parameters
This method has no parameters.
Return value
The method returns one of the following possible values.
| Return code | Description |
|---|---|
|
Operation completed successfully. |
Remarks
In addition to the COM error code 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.
To unlock the smart card, call the ISCard::UnlockSCard method.
Examples
The following example shows acquiring exclusive access to the smart card.
HRESULT hr;
// Lock the smart card.
hr = pISCard->LockSCard();
if (FAILED(hr))
{
printf("Failed LockSCard\n");
// Take error handling action as needed.
}
// Use smart card; unlock the smart card when done.
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 |
|
| Type library |
|
| DLL |
|
| IID |
IID_ISCard is defined as 1461AAC3-6810-11D0-918F-00AA00C18068 |
See also