Sending Messages to the GINA
|Secure attention sequence type in wParam parameter||Description|
|WLX_SAS_TYPE_CTRL_ALT_DEL||Indicates that a CTRL+ALT+DEL key sequence was received.|
|WLX_SAS_TYPE_SC_INSERT||Indicates that a smart card has been inserted into a compatible device.|
|WLX_SAS_TYPE_SC_REMOVE||Indicates that a smart card has been removed from a compatible device.|
|WLX_SAS_TYPE_USER_LOGOFF||Indicates that a user requested logoff.|
|WLX_SAS_TYPE_SCRNSVR_TIMEOUT||Indicates that the screen saver should be run due to lack of user input.|
|WLX_SAS_TYPE_TIMEOUT||Indicates that no user input was received within the specified time-out period.|
For time-outs and logoffs, Winlogon will close the dialog box after the message has been sent. This message is sent so the dialog box operation can respond in a useful manner (for example, by closing itself down if a logoff has occurred).
For input time-outs, the dialog box is closed with the code WLX_DLG_INPUT_TIMEOUT.
For screen saver time-outs, the dialog box is closed with the code WLX_DLG_SCREEN_SAVER_TIMEOUT.
For logoffs, the dialog box operation is closed with the code WLX_DLG_USER_LOGOFF.