Source file: /~heha/basteln/PC/Programmiergeräte/PEPS-III/peps4win32.zip/src/usbprint.h

#define USBPRINT_IOCTL_INDEX  0x0000
#define IOCTL_USBPRINT_GET_LPT_STATUS  CTL_CODE(FILE_DEVICE_UNKNOWN,  \
                                                   USBPRINT_IOCTL_INDEX+12,\
                                                   METHOD_BUFFERED,  \
                                                   FILE_ANY_ACCESS)