Metrologic Optimus R, Programming Manual

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Chapter 3 Terminal Specific Function Library 21
Example _KeepAlive__();
Description Whenever this routine is called, it will reset the counter governed by the global
variable AUTO_OFF, so that the user's application program will keep on
running without suffering from being automatically shut down by the system.
Return
None
SetPwrKey Optimus S
Purpose To set the POWER key as the wakeup event.
Syntax void SetPwrKey (int mode);
int mode; /* enable or disable the POWER key */
Example
SetPwrKey (1); /* enable the POWER key for waking up the terminal*/
Description The parameter mode is set to one of the following values:
POWER_KEY_DISABLE (0) The POWER key is disabled.
POWER_KEY_ENABLE (1) The POWER key is enabled.
Return None
shut_down
Purpose To shut down the system.
Syntax
void shut_down (void);
Example shut_down();
Description This routine shuts down the system. Upon powering on, the system will always
restart.
Return None
SysSuspend
Purpose To shut down the system.
Syntax void SysSuspend (void);
Example SysSuspend();
Description This routine shuts down the system. Upon powering on, the system may
resume or restart itself, depending on the system setting.
Return None