RGB 색상 관련글

RGB 색상과 관련해 서 자주 잊어 버리는 경우가 있어서 메모함. 색상

 

GetRValue

The GetRValue macro retrieves an intensity value for the red component of a 32-bit red, green, blue (RGB) value.

BYTE GetRValue(

  DWORD rgb  // 32-bit RGB value

);

PALETTEINDEX

The PALETTEINDEX macro accepts an index to a logical-color palette entry and returns a palette-entry specifier consisting of a 32-bit COLORREF value that specifies the color associated with the given index. An application using a logical color palette can pass this specifier, instead of an explicit red, green, blue (RGB) value, to GDI functions that expect a color. This allows the function to use the color in the specified palette entry.

COLORREF PALETTEINDEX(

  WORD wPaletteIndex  // index to palette entry

);

Color Macros

The following macros are used with color.

GetBValue
GetGValue
GetRValue
PALETTEINDEX
PALETTERGB
RGB