TwainSetContrast Method (GdPictureImaging)

In This Topic

Tries to set the current contrast for the next acquisition.

Syntax

'Declaration
 
Public Function TwainSetContrast( _
   ByVal Contrast As Integer _
) As Boolean

public bool TwainSetContrast( 
   int Contrast
)

public function TwainSetContrast( 
    Contrast: Integer
): Boolean;

public function TwainSetContrast( 
   Contrast : int
) : boolean;

public: bool TwainSetContrast( 
   int Contrast
)

public:
bool TwainSetContrast( 
   int Contrast
)

Contrast: The TWAIN standard *says* that the range for this cap is -1000 ... +1000.

True if success, else False -> Use TwainGetLastResultCode() and TwainGetLastConditionCode() methods for diagnosing the error.

Remarks

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