Replaces one color by another on a GdPicture image or into an area of a GdPicture image defined by SetROI() method. This method takes a percentage threshold parameter regarding the color to replace. Ie: A threshold value of 90 means that all the color values which are within 90% of the color value to replace will be considered.

'Declaration
 
Public Overloads Function SwapColor( _
   ByVal ImageID As Integer, _
   ByVal ColorSrc As Integer, _
   ByVal ColorDst As Integer, _
   ByVal Threshold As Single _
) As GdPictureStatus

public GdPictureStatus SwapColor( 
   int ImageID,
   int ColorSrc,
   int ColorDst,
   float Threshold
)

public function SwapColor( 
    ImageID: Integer;
    ColorSrc: Integer;
    ColorDst: Integer;
    Threshold: Single
): GdPictureStatus; 

public function SwapColor( 
   ImageID : int,
   ColorSrc : int,
   ColorDst : int,
   Threshold : float
) : GdPictureStatus;

public: GdPictureStatus SwapColor( 
   int ImageID,
   int ColorSrc,
   int ColorDst,
   float Threshold
) 

public:
GdPictureStatus SwapColor( 
   int ImageID,
   int ColorSrc,
   int ColorDst,
   float Threshold
)