PT-9230 Mobile Computer SDK Programming Manual
15
PowerOnLCD
To turn ON or OFF the LCD screen power.
DWORD
PowerOnLCD
{
BOOL
bOn
}
Parameters
bOn
[in] Flag that indicates whether turn on LCD power(TRUE) or turn off LCD power(FALSE).
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
After calling this function with “bOn” FALSE, terminal will only turn OFF the LCD power. It means that terminal
is still working. You should either call this function again to turn ON the LCD power or to reset terminal to use the
terminal with the LCD screen ON.
Example
DWORD dwResult;
dwResult = PowerOnLCD(FALSE); //power off LCD
if(dwResult != E_FUNC_SUCCEED)
AfxMessageBox(_T("PowerOnLCD fail"));
Sleep(3000);
dwResult = PowerOnLCD(TRUE); //power on LCD
if(dwResult != E_FUNC_SUCCEED)
AfxMessageBox(_T("PowerOnLCD fail"));
Requirements
OS Versions:
Windows CE 6.0 or beyond.
Header:
sysapiax.h
Link Library:
sysapiax.lib
Link DLL:
sysapiax.dll
Device:
PT90
