整理一下:
Color R G B Color R G B
Black 0 0 0 Light gray 192 192 192 ////here
Blue 0 0 192 Bright blue 0 0 255
Green 0 192 0 Bright green 0 255 0
Cyan 0 192 192 Bright cyan 0 255 255
Red 192 0 0 Bright red 255 0 0
Magenta 192 0 192 Bright magenta 255 0 255
Yellow 192 192 0 Bright yellow 255 255 0
Dark gray 128 128 128 White 255 255 255
///here
How to change a RGB color to a grayscale mode.
COLORREF crPixel;//the color to be changed!
BYTE value;
value=(GetRValue(crPixel)*0.299)+(GetGValue(crPixel)*0.587) + (GetBValue(crPixel) * 0.114);
COLORREf crGrayScale=RGB(value,value,value) ;//this is the desired!