Argox PT-9130 - Manual (Page 21)

PT-90 Mobile Computer SDK Programming Manual 14
Display_QueryBacklightIntensity
To return the back-light intensity of external power and battery power.
DWORD Display_QueryBacklightIntensity
{
LPDWORD lpdwACBacklight ,
LPDWORD lpdwBatteryBacklight
}
Parameters
lpdwACBacklight
[out] The backlight intensity of external power.
lpdwBatteryBacklight
[out] The backlight intensity of battery power.
Returned Values
If this action succeeds, the returned value is E_FUNC_SUCCEED . If this action fails, possible returned values are
E_FUNC_ERROR , E_FUNC_NULLPTR .
Remarks
The parameters will be one of the values in the following table.
Backlight intensity Backlight brightness
4 super
3 normal
2 fine
1 micro
0 off