Intermec ck1 Reference Guide

Page of 390
Chapter 2 — Configuring the CK1 System 
CK1 SDK Programmer’s Reference Manual 
51 
Turning Off the LCD 
 
Purpose:  Turn off the specified LCD/LCM device. 
 
Syntax: 
int devLcdTurnOffPower(void)
 
 
On-CK1 Return: -1 
 Function 
failed 
0 Function 
succeeded 
 On-Host Parameters: None 
 
On-Host Return:  Always return 0 
Turning On the Backlight 
 
Purpose:  Turn on the backlight of a specified LCD/LCM device. 
 
Syntax: 
int devLcdTurnOnBackLight(void)
 
 
On-CK1 Return: -1 
 Function 
failed 
0 Function 
succeeded 
 On-Host Parameters: None 
 
On-Host Return:  Always return 0 
Turning Off the Backlight 
 
Purpose:  Turn off the backlight of the specified LCD/LCM device. 
 
Syntax: 
int devLcdTurnOffBackLight(void)
 
 
On-CK1 Return: -1 
 Function 
failed 
0 Function 
succeeded 
 On-Host Parameters: None 
 
On-Host Return:  Always return 0 
Advanced Power Management APIs 
To use the advanced power management (APM) APIs, you need to include 
the header file. 
To include the header file 
•  Add this line to your source file: 
 #include 
<eslib_apm.h> 
The CK1 has four modes of power management, as described in the next 
table. For more details, see “Power Management of CK1” on page 300.