This function is supported by all computers with a backlit LCD screen. See the computer user manual for more information on its backlight capability.
Sets the LCD backlight brightness level associated with the specified power source.
HRESULT ITCSetScreenBrightnessAcDc( DWORD dwPowerSelect, DWORD dwBrightness )
dwPowerSelect
[in] 0xAC: AC power supply.
[in] 0xDC: Battery or DC power supply.
dwBrightness
[in] LCD light brightness level. The supported brightness range is from 1 to the value set by ITCGetMaxScreenBrightness.
HRESULT indicating success or failure. Honeywell recommends using the result-code macros to evaluate the return code.
If your computer does not have a backlit screen, this function returns ITC_ERROR_FUNCTION_NOT_SUPPORTED.
Header File: ITC50.H
Library: ITC50.LIB