'Declaration
 
Public Function WiaGetBrightness() As Double

public double WiaGetBrightness()

public function WiaGetBrightness(): Double; 

public function WiaGetBrightness() : double;

public: double WiaGetBrightness(); 

public:
double WiaGetBrightness(); 

If success: The standard *says* that the range for this cap is -1000 ... +1000. If fail, Returns -99999. Use WiaGetLastError() methods for diagnosing the error.