IOCTL_SMARTCARD_POWER (Windows Embedded CE 6.0)
1/6/2010
This code is used to issue various power operations on a smart card.
Parameters
- dwOpenData
[in] Handle returned from a call to the smart card reader driver's XXX_Open (Device Manager) function.
- dwCode
[in] Specifies this code.
pBufIn
[in] Contains one of the following codes to select a specific power operation.Code Operation SCARD_COLD_RESET
Power down the smart card and power it up again.
SCARD_WARM_RESET
Reset the smart card without removing power.
SCARD_POWER_DOWN
Remove power from the smart card.
- dwLenIn
Ignored.
- pBufOut
[out] Used with SCARD_COLD_RESET and SCARD_WARM_RESET to store a complete ATR from the smart card.
- dwLenOut
[out] The size of the output buffer. This must be at least 33 bytes to hold a complete ATR.
- pdwActualOut
[out] The actual number of bytes in the ATR.
Return Values
One of the following status values.
| Status | Description |
|---|---|
STATUS_SUCCESS |
The operation completed successfully. |
STATUS_UNRECOGNIZED_MEDIA |
The smart card is unsupported or unknown. |
STATUS_NO_MEDIA |
There is no smart card in the card reader. |
STATUS_IO_TIMEOUT |
The operation has timed out. |
Remarks
Smart card reader drivers return Windows NT status values, rather than Win32 error values, as the return values from the driver's callback function.
Requirements
| Header | winsmcrd.h |
| Windows Embedded CE | Windows CE 3.0 and later |