Function:     GDI_COLGET

Purpose:      Obtains color Look Up Table from the display.

Category:     DISPLAY

File:         gdilib.c

Author:       K.G. Begeman

Use:          INTEGER GDI_COLGET( GDI_ID,     Input      INTEGER
                                  VALUES,     Input      INTEGER ARRAY
                                  RED,        Output     REAL ARRAY
                                  GREEN,      Output     REAL ARRAY
                                  BLUE,       Output     REAL ARRAY
                                  NCOLORS )   Input      INTEGER

              GDI_COLGET     Returns zero on success, negative on error.
              VALUES         Array containing the display values for
                             which the colors should be obtained.
              RED            Red intensities in the range 0.0 to 1.0.
              GREEN          Green intensities in the range 0.0 to 1.0.
              BLUE           Blue intensities in the range 0.0 to 1.0.
              NCOLORS        Total number of colors to read from display.

Updates:      Dec 11, 1990: KGB Document created.