'Declaration
 
Public Sub ColorRGBtoCMYK( _
   ByVal Red As Integer, _
   ByVal Green As Integer, _
   ByVal Blue As Integer, _
   ByRef Cyan As Integer, _
   ByRef Magenta As Integer, _
   ByRef Yellow As Integer, _
   ByRef Black As Integer _
) 

public void ColorRGBtoCMYK( 
   int Red,
   int Green,
   int Blue,
   ref int Cyan,
   ref int Magenta,
   ref int Yellow,
   ref int Black
)

public procedure ColorRGBtoCMYK( 
    Red: Integer;
    Green: Integer;
    Blue: Integer;
   var  Cyan: Integer;
   var  Magenta: Integer;
   var  Yellow: Integer;
   var  Black: Integer
); 

public function ColorRGBtoCMYK( 
   Red : int,
   Green : int,
   Blue : int,
   Cyan : int,
   Magenta : int,
   Yellow : int,
   Black : int
);

public: void ColorRGBtoCMYK( 
   int Red,
   int Green,
   int Blue,
   ref int Cyan,
   ref int Magenta,
   ref int Yellow,
   ref int Black
) 

public:
void ColorRGBtoCMYK( 
   int Red,
   int Green,
   int Blue,
   int% Cyan,
   int% Magenta,
   int% Yellow,
   int% Black
) 

Parameters

Red

The input value for the red component. Use the value between 0 and 255.

Green

The input value for the green component. Use the value between 0 and 255.

Blue

The input value for the blue component. Use the value between 0 and 255.

Cyan

Output parameter. The resulting value for the Cyan component between 0 and 255.

Magenta

Output parameter. The resulting value for the Magenta component between 0 and 255.

Yellow

Output parameter. The resulting value for the Yellow component between 0 and 255.

Black

Output parameter. The resulting value for the Black (Key) component between 0 and 255.

Reference

GdPictureImaging Class
GdPictureImaging Members
ColorRGBtoCMY Method
ColorCMYKtoRGB Method
ColorCMYtoRGB Method