'Declaration
 
Public Function WiaGetContrast() As Double

public double WiaGetContrast()

public function WiaGetContrast(): Double; 

public function WiaGetContrast() : double;

public: double WiaGetContrast(); 

public:
double WiaGetContrast(); 

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.