1WGL_I3D_gamma
2http://oss.sgi.com/projects/ogl-sample/registry/I3D/wgl_gamma.txt
3	WGL_GAMMA_TABLE_SIZE_I3D 0x204E
4	WGL_GAMMA_EXCLUDE_DESKTOP_I3D 0x204F
5	BOOL wglGetGammaTableI3D (HDC hDC, int iEntries, USHORT* puRed, USHORT *puGreen, USHORT *puBlue)
6	BOOL wglGetGammaTableParametersI3D (HDC hDC, int iAttribute, int* piValue)
7	BOOL wglSetGammaTableI3D (HDC hDC, int iEntries, const USHORT* puRed, const USHORT *puGreen, const USHORT *puBlue)
8	BOOL wglSetGammaTableParametersI3D (HDC hDC, int iAttribute, const int* piValue)
9