HSV_SfromRGB method (Main Control)

C++ Builder example

Delphi example

 

Builder Syntax

int __fastcall HSV_SfromRGB (unsigned cr);

Delphi Syntax

Function HSV_SfromRGB (cr: TColorRef): Integer;

Overview

Refer to Changing Brightness and Contrast.

Remarks

Returns the corresponding Saturation (S) of a standard Windows COLORREF (cr).

Saturation is the amount of "white" in a color. A saturation of 0 contains the most white and a saturation of 255 contains no white.

The standard Windows values for COLORREF (cr) represent either red, green, and blue color values, or an index into the bitmap's palette. A COLORREF value with the format $00BBGGRR represents the blue, green, and red color values for the specified pixel, where $BB is the blue value, $GG is the green value and $RR is the red value. If $01000000 is set in the COLORREF value ($010000ZZ), the lower 8 bits ($ZZ) represent an index into the bitmap's palette, which holds the color value. You can specify a COLORREF value (the return value of the RGB function), or you can specify a palette index as explained in Using Palette Indexes as Color Values. Please note that just because an image has a palette, does not mean the value returned by this property is a palette index.

See Also

Elements:

HSV_HfromRGB method, HSV_VfromRGB method, RGBfromHSV method

Topics:

Raster Images: Doing Color Space Conversions

 

Creating and Using a Bitmap Region

 

Using Color Values in LEADTOOLS