Casio IT-2000W - Manual (Page 172)

172
Backlight ON/OFF
This function is used to forcibly turn ON or OFF the backlight. If turned ON by this function, the
backlight will remain on until Backlight OFF is triggered by the Backlight OFF function or ABO.
If this function is activated under the ABC control, the ABC will be temporarily disabled, and will
be enabled again when Backlight OFF is triggered by the Backlight OFF function or ABO.
SYNTAX
int SYS_SetBacklight(int nOnOff);
INPUT
nOnOff = 0 OFF
1 ON
OUTPUT
= 0 Normal
= -2 No response from KBC
= -3 VxD not registered