@param This Protocol instance pointer.\r
@param KeyData A pointer to a buffer that is filled in with the\r
keystroke information data for the key that was\r
- pressed.\r
+ pressed. If KeyData.Key, KeyData.KeyState.KeyToggleState\r
+ and KeyData.KeyState.KeyShiftState are 0, then any incomplete\r
+ keystroke will trigger a notification of the KeyNotificationFunction.\r
@param KeyNotificationFunction Points to the function to be called when the key\r
- sequence is typed specified by KeyData.\r
+ sequence is typed specified by KeyData. This notification function\r
+ should be called at <=TPL_CALLBACK.\r
@param NotifyHandle Points to the unique handle assigned to the\r
registered notification.\r
\r