The following table lists the available smart card IOCTL codes. With the exception of IOCTL_SMARTCARD_GET_LAST_ERROR, these codes apply to both WDM and VxD drivers.
| IOCTL Code | Description |
|---|---|
| IOCTL_SMARTCARD_EJECT | Ejects the currently inserted smart card from the smart card reader. |
| IOCTL_SMARTCARD_GET_ATTRIBUTE | Queries smart card and smart card reader attributes |
| IOCTL_SMARTCARD_GET_LAST_ERROR | VxD drivers only. Retrieves the error code of the last operation. |
| IOCTL_SMARTCARD_GET_STATE | Gets the current status of the smart card reader. |
| IOCTL_SMARTCARD_IS_ABSENT | Either returns immediately if no card is currently inserted, or installs an event handler to track card removals. |
| IOCTL_SMARTCARD_IS_PRESENT | Either returns immediately if no card is currently inserted, or installs an event handler to track card insertions. |
| IOCTL_SMARTCARD_POWER | Either powers down or warm resets the card. |
| IOCTL_SMARTCARD_SET_ATTRIBUTE | Sets various attributes in the driver. |
| IOCTL_SMARTCARD_SET_PROTOCOL | Sets the protocol to be used with the currently inserted card. |
| IOCTL_SMARTCARD_SWALLOW | Causes the reader to swallow the card. |
| IOCTL_SMARTCARD_TRANSMIT | Transmits data to and receives data from the currently inserted smart card. |