Argox PT-9130 - Manual (Page 25)

PT-90 Mobile Computer SDK Programming Manual 18
SetBacklightPWM
To adjusts the LCD screen back-light brightness.
DWORD SetBacklightPWM
{
int nACPowerPercent ,
int nBatteryPercent
}
Parameters
nACPowerPercent,nBatteryPercent
[in] One is the brightness level setting when the terminal is using AC power and the other is the brightness
level setting when the terminal is using battery power. These two settings must be one of the values in the
table below.
nPercent Backlight brightness
100 super
75 normal
50 fine
25 micro
0 off
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_PAR_ERROR .
Remarks
The Back-light Setting function in the Control Panel sets LCD screen back-light brightness level. Calling this
function will also change the brightness level in Back-light Setting. You can use this function or Back-light Setting
function in the Control Panel to adjust back-light brightness level.
Example
DWORD dwResult = SetBacklightPWM(100,100);
if(dwResult != E_FUNC_SUCCEED)
AfxMessageBox(_T("SetBacklightPWM fail"));
Requirements
OS Versions: Windows CE 6.0 or beyond.
Header: sysapiax.h
Link Library: sysapiax.lib
Link DLL: sysapiax.dll
Device: PT90