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This value is a 32-bit value used to specify an RGB color.
typedef DWORD COLORREF;
typedef DWORD* LPCOLORREF;
When specifying an explicit RGB color, the COLORREF value has the following hexadecimal form.
The low-order byte contains a value for the relative intensity of red, the second byte contains a value for green, and the third byte contains a value for blue.
The high-order byte must be zero.
The maximum value for a single byte is 0xFF.
To create a COLORREF color value, use the RGB macro.
To extract the individual values for the red, green, and blue components of a color value, use the GetRValue, GetGValue, and GetBValue macros, respectively.
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