Advantech SPC-57 - Manual (Page 78)

78
lpOutBuffer: the DWORD pointer to your screen off time if user-interface idled. The unit is
mini-second. If the value is 0, screen-off function is disabled.
nOutBufferSize: unused.
7. IOCTL_SET_SCREENOFFTIME (0x1007):
lpInBuffer : the DWORD pointer to your screen off time if user-interface idled. The unit is mini-second.
If the value is 0, screen-off function is disabled.
nInBufferSize:unused.
lpOutBuffer: unused.
nOutBufferSize: unused.
8. IOCTL_SET_SCREENOFF (0x1010):
Set the LCD power off immediately.
lpInBuffer : unused.
nInBufferSize:.unused.
lpOutBuffer: unused.
nOutBufferSize: unused.
Examples:
#define IOCTL_ENABLE_WDT 0x1001
#define IOCTL_DISABLE_WDT 0x1002
#define IOCTL_GET_WDTPERIOD 0x1003
#define IOCTL_SET_WDTPERIOD 0x1004
#define IOCTL_ACCESS_WDT 0x1005
#define IOCTL_GET_SCREENOFFTIME 0x1006
#define IOCTL_SET_SCREENOFFTIME 0x1007
#define IOCTL_SET_SCREENON 0x100F
#define IOCTL_SET_SCREENOFF 0x1010