Unitech PA500 manual LCD/Backlight related function, ParametersInput

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6.4.LCD/Backlight related function

There are two backlight controls, screen backlight and keypad backlight. They are controlled separately. For screen backlight, you can adjust brightness of backlight also.

6.4.1. Screen Backlight Control

Function Description:

This function turns screen backlight on or off.

Function call:

void BacklightOn(BOOL fON)

Parameter(Input)
fON: BOOL:	TRUE = turn on screen backlight.
Return code:	FALSE= turn off backlight.
Return code:
6.4.2. Get Screen Backlight Status
Function Description:

This function returns the status of screen backlight.

Function call:

BOOL GetBacklightStatus(void)

Return code:

TRUE = screen backlight is on.

FALSE = screen backlight is off.

6.4.3. Screen Backlight Brightness Control

Function Description:

This function adjusts screen backlight brightness.

Function call:

void BrightnessUp(BOOL fup)

Parameters(Input)
Fup: BOOL:	TRUE = adjust one step up.
Return code:	FALSE = adjust one step down.
Return code:

-

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Contents PA500 Programming Manual USI.DLL Unitech Scanner Interface DLL Automatically enable scanner beam with pressing trigger keySCANKEY3.DLL Backward Compatible API for PT930/PT930S’S GET Device ID Update Notes Introduction How to download data from scanner COM definition for PA500 Parameter input Function callReturns the system error code Enable / Disable ScannerReset Scanner Get error codeGet scan data Function DescriptionParameter output Get length of scanned data Get Symbology nameClear scan data system buffer Good read indicatorWait for acknowledgement of the last sent command Save setting to profilesParameter output Return Save scanner setting into specified fileChange scanner setting from specified setting profile Automatically enable scanner beam with pressing trigger keyCheck if Scan2Key.exe program is running or not Check if auto scanning is enableTest if Scan2Key is enabled Stop auto scanning functionEsc, 0x80+cmd Function call Enable/Disable Scan2KeySend scanner command to decoding chip Only send single command decoding chipEsc, parameter1, parameter2, …, BCC Send command to decoding chipControl command for decoder chip Special Command for controlEnable in Communication Code32set TRACK1,5 TRACK2,6 TRACK3Upceset CodabarsetLabelcode UpcasetUPC a Return code Disable DecoderPTEnableBarcode Function call Check barcode inputReset all symbologies to default Read barcode dataGet DLL version no Function call for VC INT PTVersionvoid Return Integer Disable laser trigger keyEnable laser trigger key PTEnableBarToKey Return code True Shift lock False Shift unlock SysIOAPI.DLL Keypad Related Functions Return code Bool True Caps lock False Caps unlockParameterInput Scanner Related FunctionsExample LED related functionParametersInput LCD/Backlight related functionDynamic Load DLL Get Device ID Update notes

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