TwainGetAvailableContrastNo Method (GdPictureImaging)

In This Topic

Returns an available contrast value which can be used by the opened source in its current configuration.

Syntax

'Declaration
 
Public Function TwainGetAvailableContrastNo( _
   ByVal Number As Integer _
) As Double

public double TwainGetAvailableContrastNo( 
   int Number
)

public function TwainGetAvailableContrastNo( 
    Number: Integer
): Double;

public function TwainGetAvailableContrastNo( 
   Number : int
) : double;

public: double TwainGetAvailableContrastNo( 
   int Number
)

public:
double TwainGetAvailableContrastNo( 
   int Number
)

Number: Index of the available contrast value. Must be a value between 1 and TwainGetAvailableContrastCount() returned value.

The selected contrast value.

Remarks

Before using this method check that the TWAIN state is >= 4 (TWAIN_SOURCE_OPEN) To get the TWAIN state, use the TwainGetState() method.